diff --git a/src/postorius/forms.py b/src/postorius/forms.py
index 2abfd18..db98aaa 100644
--- a/src/postorius/forms.py
+++ b/src/postorius/forms.py
@@ -302,7 +302,7 @@
         coerce=lambda x: x == 'True',
         choices=((True, _('Yes')), (False, _('No'))),
         widget=forms.RadioSelect,
-        label=_('Advertise the existance of this list?'),
+        label=_('Advertise the existence of this list?'),
         help_text=(
             'Choose whether to include this list on the list of all lists'))
     filter_content = forms.TypedChoiceField(
diff --git a/src/postorius/models.py b/src/postorius/models.py
index 2f002cb..296dd31 100644
--- a/src/postorius/models.py
+++ b/src/postorius/models.py
@@ -69,7 +69,7 @@
             raise MailmanApiError(e)
         except HTTPError, e:
             if e.code == 404:
-                raise Mailman404Error
+                raise Mailman404Error('Mailman resource could not be found.')
             else:
                 raise
         except MailmanConnectionError, e:
diff --git a/src/postorius/static/postorius/css/style.css b/src/postorius/static/postorius/css/style.css
index 440698e..6423b93 100755
--- a/src/postorius/static/postorius/css/style.css
+++ b/src/postorius/static/postorius/css/style.css
@@ -245,12 +245,22 @@
 }
 
 /* Mouseover help */
-span.more_info {border-bottom: thin dotted; background: #ffeedd;}
-span.more_info:hover {text-decoration: none; background: #ffffff; z-index: 6; }
-span.more_info span {position: absolute; left: -9999px;
-  margin: 0em; padding: 0.5em;
-  border-style:solid; border-color:black; border-width:1px; z-index: 6;}
-span.more_info:hover span {left: 2%; background: #ffffff;} 
+span.more_info {
+    border-bottom: thin dotted;
+    background: #ffeedd;
+    font-weight: normal;
+}
+span.more_info:hover {
+    text-decoration: none; background: #ffffff; z-index: 6;
+}
+span.more_info span {
+    position: absolute; left: -9999px;
+    margin: 0em; padding: 0.5em;
+    border-style:solid; border-color:black; border-width:1px; z-index: 6;
+}
+span.more_info:hover span {
+    left: 2%; background: #ffffff;
+}
 span.more_info span {
     position: absolute; left: -9999px;
     margin: 2em; padding: 0.5em; 
diff --git a/src/postorius/templates/postorius/user_address_preferences.html b/src/postorius/templates/postorius/user_address_preferences.html
index e8092df..96e4141 100644
--- a/src/postorius/templates/postorius/user_address_preferences.html
+++ b/src/postorius/templates/postorius/user_address_preferences.html
@@ -8,121 +8,93 @@
    <li class="active"><a href="#">{% trans "Address Based Preferences" %}</a></li>
    <li><a href="{% url 'user_subscription_preferences' %}">{% trans "Subscription Based Preferences" %}</a></li>
 </ul>
-<br>
-<h2> Per-Email-Address Based Preferences Overview </h2>
-<p> Table to view the preferences(for testing only)</p>
-<!-- Table displaying the user's address-based Mailman preferences, for testing/viewing purposes only, may be removed-->
-<table class="table table-bordered table-striped mm_userData">
-   <tbody>
-   <tbody>
-      <tr>
-         <th>{% trans 'Email Address' %}</th>
-         <th>{% trans 'Delivery Status' %}</th>
-         <th>{% trans 'Delivery Mode' %}</th>
-         <th>{% trans 'Receive Own Postings' %}</th>
-         <th>{% trans 'Acknowledge Posts' %}</th>
-         <th>{% trans 'Hide Address' %}</th>
-         <th>{% trans 'Receive List Copy' %}</th>
-      </tr>
-      {%for a in addresses%}
-      <tr>
-         <th>{{ a }}</th>
-         <td>{{ a.preferences.delivery_status }}</td>
-         <td>{{ a.preferences.delivery_mode }}</td>
-         <td>{{ a.preferences.receive_own_postings }}</td>
-         <td>{{ a.preferences.acknowledge_posts }}</td>
-         <td>{{ a.preferences.hide_address }}</td>
-         <td>{{ a.preferences.receive_list_copy }}</td>
-      </tr>
-      {%endfor%}
-   </tbody>
-</table>
-<br>
-<h2>Address Based Preferences Form </h2>
-<!-- Form to modify the user's address based preferences. The form is displayed as a table showing initial values 
-   previously set by the user, if any -->
-<form action = "{% url 'user_address_preferences' %}" method = "post" class = "well" id ="address_formset">
-   {% csrf_token %}
-   {{formset.management_form}}
-   {{formset.non_form_errors.as_ul}}
-   <table class="table table-bordered table-striped" border = "2">
-      <thead>
-         <tr>
-            <th> Preferences </th>
-            {% for form,address in zipped_data %}
-            <th> {{address}} </th>
-            {% endfor %}
-         </tr >
-      </thead >
-      <tr>
-         <td>
-            <p>Mail Delivery: </p>
-            <p>[<span class="more_info"><a href="#" target="_blank">More info</a><span>{{ helperform.delivery_status.help_text }}
-               </span></span>] 
-            </p>
-         </td>
-         {% for form,address in zipped_data %}
-         <td> {{form.delivery_status }}</td>
-         {% endfor %} 
-      </tr>
-      <tr>
-         <td>
-            <p> Select a Mode of Delivery:  </p>
-            <p>[<span class="more_info"><a href="#" target="_blank">More info</a><span>{{ helperform.delivery_mode.help_text }}
-               </span></span>] 
-            </p>
-         </td>
-         {% for form,address in zipped_data %}
-         <td> {{form.delivery_mode }} </td>
-         {% endfor %} 
-      </tr>
-      <tr>
-         <td>
-            <p> Receive your own posts to the list? </p>
-            <p>[<span class="more_info"><a href="#" target="_blank">More info</a><span>{{ helperform.receive_own_postings.help_text }}
-               </span></span>] 
-            </p>
-         </td>
-         {% for form,address in zipped_data %}
-         <td> {{form.receive_own_postings }} </td>
-         {% endfor %} 
-      </tr>
-      <tr>
-         <td>
-            <p> Receive acknowledgement mails? </p>
-            <p>[<span class="more_info"><a href="#" target="_blank">More info</a><span>{{ helperform.acknowledge_posts.help_text }}
-               </span></span>]
-            </p>
-         </td>
-         {% for form,address in zipped_data %}
-         <td> {{form.acknowledge_posts }} </td>
-         {% endfor %} 
-      </tr>
-      <tr>
-         <td>
-            <p> Conceal yourself from the subscriber list? </p>
-            <p>[<span class="more_info"><a href="#" target="_blank">More info</a><span>{{ helperform.hide_address.help_text }}
-               </span></span>]
-            </p>
-         </td>
-         {% for form,address in zipped_data %}
-         <td> {{form.hide_address }} </td>
-         {% endfor %} 
-      </tr>
-      <tr>
-         <td>
-            <p> Avoid duplicate copies of messages? </p>
-            <p>[<span class="more_info"><a href="#" target="_blank">More info</a><span>{{ helperform.receive_list_copy.help_text }}
-               </span></span>]
-            </p>
-         </td>
-         {% for form,address in zipped_data %}
-         <td> {{form.receive_list_copy }} </td>
-         {% endfor %} 
-      </tr>
-   </table>
-   <center><button class="btn btn-success" type="submit">{% trans "Save" %}</button></center>
-</form>
+{% if nolists %}
+    <div class="mm_subHeader" >
+       <h1>{% trans "No Preferences Available" %}</h1>
+    </div>
+    <p>{% trans 'You are not yet subscribed to any lists, so you have no Mailman preferences.' %}</p>
+{% else %}
+    <form action = "{% url 'user_address_preferences' %}" method = "post" class = "well" id ="address_formset">
+       {% csrf_token %}
+       {{formset.management_form}}
+       {{formset.non_form_errors.as_ul}}
+       <table class="table table-bordered table-striped" border = "2">
+          <thead>
+             <tr>
+                <th> Preferences </th>
+                {% for form,address in zipped_data %}
+                <th> {{address}} </th>
+                {% endfor %}
+             </tr >
+          </thead >
+          <tr>
+             <td>
+                <p>Mail Delivery: </p>
+                <p>[<span class="more_info"><a href="#" target="_blank">More info</a><span>{{ helperform.delivery_status.help_text }}
+                   </span></span>] 
+                </p>
+             </td>
+             {% for form,address in zipped_data %}
+             <td> {{form.delivery_status }}</td>
+             {% endfor %} 
+          </tr>
+          <tr>
+             <td>
+                <p> Select a Mode of Delivery:  </p>
+                <p>[<span class="more_info"><a href="#" target="_blank">More info</a><span>{{ helperform.delivery_mode.help_text }}
+                   </span></span>] 
+                </p>
+             </td>
+             {% for form,address in zipped_data %}
+             <td> {{form.delivery_mode }} </td>
+             {% endfor %} 
+          </tr>
+          <tr>
+             <td>
+                <p> Receive your own posts to the list? </p>
+                <p>[<span class="more_info"><a href="#" target="_blank">More info</a><span>{{ helperform.receive_own_postings.help_text }}
+                   </span></span>] 
+                </p>
+             </td>
+             {% for form,address in zipped_data %}
+             <td> {{form.receive_own_postings }} </td>
+             {% endfor %} 
+          </tr>
+          <tr>
+             <td>
+                <p> Receive acknowledgement mails? </p>
+                <p>[<span class="more_info"><a href="#" target="_blank">More info</a><span>{{ helperform.acknowledge_posts.help_text }}
+                   </span></span>]
+                </p>
+             </td>
+             {% for form,address in zipped_data %}
+             <td> {{form.acknowledge_posts }} </td>
+             {% endfor %} 
+          </tr>
+          <tr>
+             <td>
+                <p> Conceal yourself from the subscriber list? </p>
+                <p>[<span class="more_info"><a href="#" target="_blank">More info</a><span>{{ helperform.hide_address.help_text }}
+                   </span></span>]
+                </p>
+             </td>
+             {% for form,address in zipped_data %}
+             <td> {{form.hide_address }} </td>
+             {% endfor %} 
+          </tr>
+          <tr>
+             <td>
+                <p> Avoid duplicate copies of messages? </p>
+                <p>[<span class="more_info"><a href="#" target="_blank">More info</a><span>{{ helperform.receive_list_copy.help_text }}
+                   </span></span>]
+                </p>
+             </td>
+             {% for form,address in zipped_data %}
+             <td> {{form.receive_list_copy }} </td>
+             {% endfor %} 
+          </tr>
+       </table>
+       <center><button class="btn btn-success" type="submit">{% trans "Save" %}</button></center>
+    </form>
+{% endif %}
 {% endblock main %}
-
-
diff --git a/src/postorius/templates/postorius/user_mailmansettings.html b/src/postorius/templates/postorius/user_mailmansettings.html
index 22a791b..1f442d6 100644
--- a/src/postorius/templates/postorius/user_mailmansettings.html
+++ b/src/postorius/templates/postorius/user_mailmansettings.html
@@ -8,108 +8,76 @@
    <li><a href="{% url 'user_address_preferences' %}">{% trans "Address Based Preferences" %}</a></li>
    <li><a href="{% url 'user_subscription_preferences' %}">{% trans "Subscription Based Preferences" %}</a></li>
 </ul>
-<br>
-<h2> Global Preferences Overview </h2>
-<p> Table to view the preferences(for testing only)</p>
-<!-- Table displaying the user's global Mailman preferencesc,only for testing/viewing purposes, may be removed-->
-<table class="table table-bordered table-striped mm_userData">
-   <tbody>
-      <tr>
-         <th> {% trans 'Preference' %}</th>
-         <th> {% trans 'Value' %}</th>
-      </tr>
-      <tr>
-         <td>{% trans 'Delivery Status' %}</td>
-         <td>{{ mm_user.preferences.delivery_status }}</td>
-      </tr>
-      <tr>
-         <td>{% trans 'Delivery Mode' %}</td>
-         <td>{{ mm_user.preferences.delivery_mode }}</td>
-      </tr>
-      <tr>
-         <td>{% trans 'Receive Own Postings' %}</td>
-         <td>{{ mm_user.preferences.receive_own_postings }}</td>
-      </tr>
-      <tr>
-         <td>{% trans 'Acknowledge Posts' %}</td>
-         <td>{{ mm_user.preferences.acknowledge_posts }}</td>
-      </tr>
-      <tr>
-         <td>{% trans 'Hide Address' %}</td>
-         <td>{{ mm_user.preferences.hide_address }}</td>
-      </tr>
-      <tr>
-         <td>{% trans 'Receive List Copy' %}</td>
-         <td>{{ mm_user.preferences.receive_list_copy }}</td>
-      </tr>
-   </tbody>
-</table>
-<br>
-<h2>Global Preferences Form</h2>
-<!-- Form to modify the user's global Mailman preferences -->
-<form  class="well" action="{% url 'user_mailmansettings' %}" method="post" >
-   {% csrf_token %}
-   <table class="table table-bordered table-striped" border="2">
-      <thead>
-         <tr>
-            <th> Preferences </th>
-            <th> Global </th>
-         </tr>
-      </thead >
-      <tr>
-         <td>
-            <p > Mail Delivery: </p>
-            </p>
-            [<span class="more_info"><a href="#" target="_blank">More info</a><span>{{ settingsform.delivery_status.help_text }}
-            </span></span>] </p> 
-         </td>
-         <td> {{settingsform.delivery_status }} </td>
-      </tr>
-      <tr>
-         <td>
-            <p> Select a Mode of Delivery: </p>
-            </p>
-            [<span class="more_info"><a href="#" target="_blank">More info</a><span>{{ settingsform.delivery_mode.help_text }}
-            </span></span>] </p>
-         </td>
-         <td> {{settingsform.delivery_mode }} </td>
-      </tr>
-      <tr>
-         <td>
-            <p > Receive your own posts to the list? </p>
-            </p>
-            [<span class="more_info"><a href="#" target="_blank">More info</a><span>{{ settingsform.receive_own_postings.help_text }}
-            </span></span>] </p>
-         </td>
-         <td> {{settingsform.receive_own_postings }} </td>
-      </tr>
-      <tr>
-         <td>
-            <p > Receive acknowledgement mails? </p>
-            </p>
-            [<span class="more_info"><a href="#" target="_blank">More info</a><span>{{ settingsform.acknowledge_posts.help_text }}
-            </span></span>] </p>
-         </td>
-         <td> {{settingsform.acknowledge_posts }} </td>
-      </tr>
-      <tr>
-         <td>
-            <p>Conceal yourself from the subscriber list? </p>
-            </p>
-            [<span class="more_info"><a href="#" target="_blank">More info</a><span>{{ settingsform.hide_address.help_text }}
-            </span></span>] </p>
-         </td>
-         <td> {{settingsform.hide_address }} </td>
-      </tr>
-      <tr>
-         <td>
-            <p >Avoid duplicate copies of messages?</p>
-            </p>                 [<span class="more_info"><a href="#" target="_blank">More info</a><span>{{ settingsform.receive_list_copy.help_text }}
-            </span></span>] </p>
-         </td>
-         <td> {{settingsform.receive_list_copy }} </td>
-      </tr>
-   </table>
-   <center><button class="btn btn-success" type="submit">{% trans "Save" %}</button></center>
-</form>
+{% if not mm_user %}
+    <div class="mm_subHeader" >
+       <h1>{% trans "No Preferences Available" %}</h1>
+    </div>
+    <p>{% trans 'You are not yet subscribed to any lists, so you have no Mailman preferences.' %}</p>
+{% else %}
+    <form  class="well" action="{% url 'user_mailmansettings' %}" method="post" >
+       {% csrf_token %}
+       <table class="table table-bordered table-striped" border="2">
+          <thead>
+             <tr>
+                <th> Preferences </th>
+                <th> Global </th>
+             </tr>
+          </thead >
+          <tr>
+             <td>
+                <p > Mail Delivery: </p>
+                </p>
+                [<span class="more_info"><a href="#" target="_blank">More info</a><span>{{ settingsform.delivery_status.help_text }}
+                </span></span>] </p> 
+             </td>
+             <td> {{settingsform.delivery_status }} </td>
+          </tr>
+          <tr>
+             <td>
+                <p> Select a Mode of Delivery: </p>
+                </p>
+                [<span class="more_info"><a href="#" target="_blank">More info</a><span>{{ settingsform.delivery_mode.help_text }}
+                </span></span>] </p>
+             </td>
+             <td> {{settingsform.delivery_mode }} </td>
+          </tr>
+          <tr>
+             <td>
+                <p > Receive your own posts to the list? </p>
+                </p>
+                [<span class="more_info"><a href="#" target="_blank">More info</a><span>{{ settingsform.receive_own_postings.help_text }}
+                </span></span>] </p>
+             </td>
+             <td> {{settingsform.receive_own_postings }} </td>
+          </tr>
+          <tr>
+             <td>
+                <p > Receive acknowledgement mails? </p>
+                </p>
+                [<span class="more_info"><a href="#" target="_blank">More info</a><span>{{ settingsform.acknowledge_posts.help_text }}
+                </span></span>] </p>
+             </td>
+             <td> {{settingsform.acknowledge_posts }} </td>
+          </tr>
+          <tr>
+             <td>
+                <p>Conceal yourself from the subscriber list? </p>
+                </p>
+                [<span class="more_info"><a href="#" target="_blank">More info</a><span>{{ settingsform.hide_address.help_text }}
+                </span></span>] </p>
+             </td>
+             <td> {{settingsform.hide_address }} </td>
+          </tr>
+          <tr>
+             <td>
+                <p >Avoid duplicate copies of messages?</p>
+                </p>                 [<span class="more_info"><a href="#" target="_blank">More info</a><span>{{ settingsform.receive_list_copy.help_text }}
+                </span></span>] </p>
+             </td>
+             <td> {{settingsform.receive_list_copy }} </td>
+          </tr>
+       </table>
+       <center><button class="btn btn-success" type="submit">{% trans "Save" %}</button></center>
+    </form>
+{% endif %}
 {% endblock main %}
diff --git a/src/postorius/templates/postorius/user_subscription_preferences.html b/src/postorius/templates/postorius/user_subscription_preferences.html
index 541ac0f..74678db 100644
--- a/src/postorius/templates/postorius/user_subscription_preferences.html
+++ b/src/postorius/templates/postorius/user_subscription_preferences.html
@@ -3,82 +3,48 @@
 {% load i18n %}
 {% block main %}
 {% include 'postorius/menu/user_nav.html' %}
-{% if nolists %}
-<div class = "mm_subHeader" >
-   <h1> { % trans "No Preferences Available" % } </h1>
-</div>
-<p > { % trans 'You are not yet subscribed to any lists, so you have no Mailman preferences.' % } </p>
-{% else %}
-<ul class = "nav nav-tabs">
-   <li> <a href = "{% url 'user_mailmansettings' %}">{% trans "Global Mailman Preferences" %} </a> </li>
-   <li> <a href = "{% url 'user_address_preferences' %}">{% trans "Address Based Preferences" %}</a> </li>
-   <li class = "active"> <a href = "#">{% trans "Subscription Based Preferences" %}</a> </li>
+<ul class="nav nav-tabs">
+   <li> <a href="{% url 'user_mailmansettings' %}">{% trans "Global Mailman Preferences" %}</a></li>
+   <li> <a href="{% url 'user_address_preferences' %}">{% trans "Address Based Preferences" %}</a></li>
+   <li class="active"><a href="#">{% trans "Subscription Based Preferences" %}</a></li>
 </ul>
-<br>
-<h2> Per-Subscription Based Preferences Overview </h2>
-<p> Table to view the preferences(for testing only)</p>
-<!-- Table displaying the user's per-subscription-based Mailman preferences, for testing/viewing purposes only, may be removed-->
-<table class="table table-bordered table-striped mm_userData">
-   <tbody>
-      <tr>
-         <th>{% trans 'Subscription' %}</th>
-         <th>{% trans 'Acknowledge Posts' %}</th>
-         <th>{% trans 'Hide Address' %}</th>
-         <th>{% trans 'Receive List Copy' %}</th>
-         <th>{% trans 'Receive Own Postings' %}</th>
-         <th>{% trans 'Delivery Mode' %}</th>
-         <th>{% trans 'Delivery Status' %}</th>
-      </tr>
-      {%for s in subscriptions%}
-      <tr>
-         <th>{{ s }}</th>
-         <td>{{ s.preferences.acknowledge_posts }}</td>
-         <td>{{ s.preferences.hide_address }}</td>
-         <td>{{ s.preferences.receive_list_copy }}</td>
-         <td>{{ s.preferences.receive_own_postings }}</td>
-         <td>{{ s.preferences.delivery_mode }}</td>
-         <td>{{ s.preferences.delivery_status }}</td>
-      </tr>
-      {%endfor%}
-   </tbody>
-</table>
-<br>
-<h2> Subscription Based Preferences Form </h2>
-<br>
-<!-- Form to modify the user's preferences pertaining to individual subscriptions to specific lists.
-   This form displays the previously initialized data by the user, if any-->
-<form class="well" action = "{% url 'user_subscription_preferences' %}" method = "post" id = "subscriptions_formset" >
-   {% csrf_token %}
-   {{formset.management_form}}
-   {{formset.non_form_errors.as_ul}}
-   <table class="well" border="1" width="100%">
-      {% for form,subscription in zipped_data %}
-      {% if forloop.first %}
-      <thead>
-         <tr>
-            <th> Subscription </th>
-            {% for field in form.visible_fields %}
-            <th > {{field.label}} <p>[<span class="more_info"><a href="#" target="_blank">More info</a><span>{{ field.help_text }}
-                </span></span>]</p></th>
-            {% endfor %}
-         </tr >
-      </thead >
-      {% endif %}
-      {% endfor %}
-      <tr class = "{% cycle row1,row2 %}" >
-      {% for form,subscription in zipped_data %}
-         <td style="width:10%"> {{subscription.list_id}} </td>
-         <td style="width:14%"> {{form.delivery_status}} </td>
-         <td style="width:20%"> {{form.delivery_mode}} </td>
-         <td style="width:14%"> {{form.receive_own_postings}}</td>
-         <td style="width:14%"> {{form.acknowledge_posts}} </td>
-         <td style="width:14%"> {{form.hide_address}} </td>
-         <td style="width:14%"> {{form.receive_list_copy}} </td>
-      </tr>
-      {% endfor %}
-   </table>
-   <center><button class="btn btn-success" type="submit"> {% trans "Save" %}</button></center>
-</form>
-
+{% if nolists %}
+    <div class="mm_subHeader" >
+       <h1>{% trans "No Preferences Available" %}</h1>
+    </div>
+    <p>{% trans 'You are not yet subscribed to any lists, so you have no Mailman preferences.' %}</p>
+{% else %}
+    <form class="well" action = "{% url 'user_subscription_preferences' %}" method = "post" id = "subscriptions_formset" >
+       {% csrf_token %}
+       {{formset.management_form}}
+       {{formset.non_form_errors.as_ul}}
+       <table class="well" border="1" width="100%">
+          {% for form,subscription in zipped_data %}
+          {% if forloop.first %}
+          <thead>
+             <tr>
+                <th> Subscription </th>
+                {% for field in form.visible_fields %}
+                <th>{{field.label}} <p><span class="more_info">[<a href="#" target="_blank">More info</a><span>{{ field.help_text }}
+                    </span>]</span></p></th>
+                {% endfor %}
+             </tr >
+          </thead >
+          {% endif %}
+          {% endfor %}
+          <tr class = "{% cycle row1,row2 %}" >
+          {% for form,subscription in zipped_data %}
+             <td style="width:10%">{{subscription.list_id}}</td>
+             <td style="width:14%">{{form.delivery_status}}</td>
+             <td style="width:20%">{{form.delivery_mode}}</td>
+             <td style="width:14%">{{form.receive_own_postings}}</td>
+             <td style="width:14%">{{form.acknowledge_posts}}</td>
+             <td style="width:14%">{{form.hide_address}}</td>
+             <td style="width:14%">{{form.receive_list_copy}}</td>
+          </tr>
+          {% endfor %}
+       </table>
+       <center><button class="btn btn-success" type="submit"> {% trans "Save" %}</button></center>
+    </form>
 {% endif %}
 {% endblock main %}
diff --git a/src/postorius/views/generic.py b/src/postorius/views/generic.py
index d85e6a9..fb24f90 100644
--- a/src/postorius/views/generic.py
+++ b/src/postorius/views/generic.py
@@ -136,6 +136,7 @@
                 self.mm_user = self._get_user(user_id)
             except MailmanApiError:
                 return utils.render_api_error(request)
+                
 
         # set the template
         if 'template' in kwargs:
diff --git a/src/postorius/views/user.py b/src/postorius/views/user.py
index 05267fd..aee9d9f 100644
--- a/src/postorius/views/user.py
+++ b/src/postorius/views/user.py
@@ -50,7 +50,6 @@
 
 
 class UserMailmanSettingsView(MailmanUserView):
-
     """The logged-in user's global Mailman Preferences."""
 
     @method_decorator(login_required)
@@ -70,7 +69,7 @@
                 messages.error(request, 'Something went wrong.')
         except MailmanApiError:
             return utils.render_api_error(request)
-        except HTTPError, e:
+        except Mailman404Error as e:
             messages.error(request, e.msg)
         return redirect("user_mailmansettings")
 
@@ -81,6 +80,9 @@
             settingsform = UserPreferences(initial=mm_user.preferences)
         except MailmanApiError:
             return utils.render_api_error(request)
+        except Mailman404Error:
+            mm_user = None
+            settingsform = None
         return render_to_response('postorius/user_mailmansettings.html',
                                   {'mm_user': mm_user,
                                    'settingsform': settingsform},
@@ -88,7 +90,6 @@
 
 
 class UserAddressPreferencesView(MailmanUserView):
-
     """The logged-in user's address-based Mailman Preferences."""
 
     @method_decorator(login_required)
@@ -131,6 +132,11 @@
                 form.initial = address.preferences
         except MailmanApiError:
             return utils.render_api_error(request)
+        except Mailman404Error:
+            return render_to_response(
+                'postorius/user_address_preferences.html',
+                {'nolists': 'true'},
+                context_instance=RequestContext(request))
         return render_to_response('postorius/user_address_preferences.html',
                                   {'mm_user': mm_user,
                                    'addresses': addresses,
@@ -141,7 +147,6 @@
 
 
 class UserSubscriptionPreferencesView(MailmanUserView):
-
     """The logged-in user's subscription-based Mailman Preferences."""
 
     @method_decorator(login_required)
@@ -185,7 +190,6 @@
                 'postorius/user_subscription_preferences.html',
                 {'nolists': 'true'},
                 context_instance=RequestContext(request))
-
         return render_to_response(
             'postorius/user_subscription_preferences.html',
             {'mm_user': mm_user,