diff -Nru software-center-5.6.0/debian/changelog software-center-5.6.0/debian/changelog
--- software-center-5.6.0/debian/changelog	2013-03-27 15:51:52.000000000 -0400
+++ software-center-5.6.0/debian/changelog	2013-04-08 15:05:55.000000000 -0400
@@ -1,3 +1,12 @@
+software-center (5.6.0-0ubuntu2) raring; urgency=low
+
+  * debian/patches/00_bzr-typerror-remove-menuitem.patch:
+    - Avoid TypeError caused by external bug, by removing the Cut
+      menu item from the main menu, and making the Copy item not
+      used for the search entry. (LP: #1151621)
+
+ -- Rodney Dawes <rodney.dawes@ubuntu.com>  Mon, 08 Apr 2013 15:04:00 -0400
+
 software-center (5.6.0-0ubuntu1) raring; urgency=low
 
   * New upstream release.
diff -Nru software-center-5.6.0/debian/patches/00_bzr-typerror-remove-menuitem.patch software-center-5.6.0/debian/patches/00_bzr-typerror-remove-menuitem.patch
--- software-center-5.6.0/debian/patches/00_bzr-typerror-remove-menuitem.patch	1969-12-31 19:00:00.000000000 -0500
+++ software-center-5.6.0/debian/patches/00_bzr-typerror-remove-menuitem.patch	2013-04-08 15:03:25.000000000 -0400
@@ -0,0 +1,72 @@
+=== modified file 'data/ui/gtk3/SoftwareCenter.ui'
+--- old/data/ui/gtk3/SoftwareCenter.ui	2012-09-25 23:13:51 +0000
++++ new/data/ui/gtk3/SoftwareCenter.ui	2013-04-04 21:21:18 +0000
+@@ -253,18 +253,6 @@ Robert Roth - Code
+                       </object>
+                     </child>
+                     <child>
+-                      <object class="GtkImageMenuItem" id="menuitem_cut">
+-                        <property name="label">gtk-cut</property>
+-                        <property name="visible">True</property>
+-                        <property name="can_focus">False</property>
+-                        <property name="use_action_appearance">False</property>
+-                        <property name="use_underline">True</property>
+-                        <property name="use_stock">True</property>
+-                        <accelerator key="x" signal="activate" modifiers="GDK_CONTROL_MASK"/>
+-                        <signal name="activate" handler="on_menuitem_cut_activate" swapped="no"/>
+-                      </object>
+-                    </child>
+-                    <child>
+                       <object class="GtkImageMenuItem" id="menuitem_copy">
+                         <property name="label">gtk-copy</property>
+                         <property name="visible">True</property>
+
+=== modified file 'softwarecenter/ui/gtk3/app.py'
+--- old/softwarecenter/ui/gtk3/app.py	2012-12-14 16:44:25 +0000
++++ new/softwarecenter/ui/gtk3/app.py	2013-04-04 22:22:32 +0000
+@@ -668,8 +668,6 @@ class SoftwareCenterAppGtk3(SimpleGtkbui
+         if (event.keyval == Gdk.keyval_from_name("x") and
+                 event.state == Gdk.ModifierType.CONTROL_MASK):
+             self.menuitem_edit.activate()
+-            if self.menuitem_cut.get_sensitive():
+-                self.menuitem_cut.activate()
+ 
+         if (event.keyval == Gdk.keyval_from_name("c") and
+                 event.state == Gdk.ModifierType.CONTROL_MASK):
+@@ -938,7 +936,6 @@ class SoftwareCenterAppGtk3(SimpleGtkbui
+         """
+         edit_menu_items = [self.menuitem_undo,
+                            self.menuitem_redo,
+-                           self.menuitem_cut,
+                            self.menuitem_copy,
+                            self.menuitem_copy_web_link,
+                            self.menuitem_paste,
+@@ -964,10 +961,7 @@ class SoftwareCenterAppGtk3(SimpleGtkbui
+                     self.menuitem_undo.set_sensitive(True)
+                 if len(self.active_pane.searchentry._redo_stack) > 0:
+                     self.menuitem_redo.set_sensitive(True)
+-                bounds = self.active_pane.searchentry.get_selection_bounds()
+-                if bounds:
+-                    self.menuitem_cut.set_sensitive(True)
+-                    self.menuitem_copy.set_sensitive(True)
++
+                 self.menuitem_paste.set_sensitive(True)
+                 if self.active_pane.searchentry.get_text():
+                     self.menuitem_delete.set_sensitive(True)
+@@ -998,15 +992,10 @@ class SoftwareCenterAppGtk3(SimpleGtkbui
+     def on_menuitem_redo_activate(self, menuitem):
+         self.active_pane.searchentry.redo()
+ 
+-    def on_menuitem_cut_activate(self, menuitem):
+-        self.active_pane.searchentry.cut_clipboard()
+-
+     def on_menuitem_copy_activate(self, menuitem):
+         if (self.active_pane and
+                 self.active_pane.is_app_details_view_showing()):
+             self.active_pane.app_details_view.desc.copy_clipboard()
+-        elif self.active_pane:
+-            self.active_pane.searchentry.copy_clipboard()
+ 
+     def on_menuitem_paste_activate(self, menuitem):
+         self.active_pane.searchentry.paste_clipboard()
+
diff -Nru software-center-5.6.0/debian/patches/series software-center-5.6.0/debian/patches/series
--- software-center-5.6.0/debian/patches/series	1969-12-31 19:00:00.000000000 -0500
+++ software-center-5.6.0/debian/patches/series	2013-04-08 15:03:41.000000000 -0400
@@ -0,0 +1 @@
+00_bzr-typerror-remove-menuitem.patch