[Bugs] #2153 UNSP: Browse fails to start from one of its journal entries

[Sugar Labs Bugs]

#2153: Browse fails to start from one of its journal entries
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    Reporter:  bernie                     |          Owner:  lucian                     
        Type:  defect                     |         Status:  new                        
    Priority:  Unspecified by Maintainer  |      Milestone:  Unspecified by Release Team
   Component:  Browse                     |        Version:  Unspecified                
    Severity:  Unspecified                |       Keywords:  dextrose                   
Distribution:  Unspecified                |   Status_field:  Unconfirmed                
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 Even if the journal entry is buggy, Browse should be tolerant and not
 crash. I'll attach the journal object later.

 This what we've found in the logs:

 {{{
 /usr/lib/python2.6/site-packages/hulahop/webview.py:56: Warning: invalid
 uninstantiatable type `(null)' in cast to `GtkWidget'
   self.web_view.get_toplevel().destroy()
 /usr/lib/python2.6/site-packages/hulahop/webview.py:56: GtkWarning:
 gtk_widget_hide: assertion `GTK_IS_WIDGET (widget)' failed
   self.web_view.get_toplevel().destroy()
 /usr/lib/python2.6/site-packages/hulahop/webview.py:56: GtkWarning:
 gtk_widget_destroy: assertion `GTK_IS_WIDGET (widget)' failed
   self.web_view.get_toplevel().destroy()
 Traceback (most recent call last):
   File "/usr/lib/python2.6/site-packages/gtk-2.0/gobject/__init__.py",
 line 108, in obj_set_property
     prop.setter(self, value)
   File "/usr/lib/python2.6/site-packages/sugar/activity/activity.py", line
 365, in set_active
     self.save()
   File "/usr/lib/python2.6/site-packages/sugar/activity/activity.py", line
 600, in save
     preview = self.get_preview()
   File "/usr/lib/python2.6/site-packages/sugar/activity/activity.py", line
 548, in get_preview
     width, height = pixmap.get_size()
 AttributeError: 'NoneType' object has no attribute 'get_size'
 }}}

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Ticket URL: <http://bugs.sugarlabs.org/ticket/2153>
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