$ inssider 

(inSSIDer:1829): Gtk-CRITICAL **: IA__gtk_window_resize: assertion `width > 0' failed

(inSSIDer:1829): Gtk-WARNING **: gtk_menu_attach_to_widget(): menu already attached to GtkMenuItem

Unhandled Exception: System.ComponentModel.Composition.CompositionException: The composition produced a single composition error. The root cause is provided below. Review the CompositionException.Errors property for more detailed information.

1) libwebkitgtk-1.0.so.0.7.0

Resulting in: An exception was thrown by the type initializer for WebKit.WebView

Resulting in: An exception occurred while trying to create an instance of type 'Extensions.NewsFeed.NewsFeedExtensionDefinition'.

Resulting in: Cannot activate part 'Extensions.NewsFeed.NewsFeedExtensionDefinition'.
Element: Extensions.NewsFeed.NewsFeedExtensionDefinition --> Extensions.NewsFeed.NewsFeedExtensionDefinition --> DirectoryCatalog (Path="/usr/share/inssider/Extensions")

Resulting in: Cannot get export 'Extensions.NewsFeed.NewsFeedExtensionDefinition (ContractName="MetaGeek.inSSIDer.Common.Extensions.IExtension")' from part 'Extensions.NewsFeed.NewsFeedExtensionDefinition'.
Element: Extensions.NewsFeed.NewsFeedExtensionDefinition (ContractName="MetaGeek.inSSIDer.Common.Extensions.IExtension") --> Extensions.NewsFeed.NewsFeedExtensionDefinition --> DirectoryCatalog (Path="/usr/share/inssider/Extensions")

  at System.ComponentModel.Composition.Hosting.CompositionServices.GetExportedValueFromComposedPart (System.ComponentModel.Composition.Hosting.ImportEngine engine, System.ComponentModel.Composition.Primitives.ComposablePart part, System.ComponentModel.Composition.Primitives.ExportDefinition definition) [0x00000] in <filename unknown>:0 
  at System.ComponentModel.Composition.Hosting.CatalogExportProvider.GetExportedValue (System.ComponentModel.Composition.Primitives.ComposablePart part, System.ComponentModel.Composition.Primitives.ExportDefinition export, Boolean isSharedPart) [0x00000] in <filename unknown>:0 
  at System.ComponentModel.Composition.Hosting.CatalogExportProvider+CatalogExport.GetExportedValueCore () [0x00000] in <filename unknown>:0 
  at System.ComponentModel.Composition.Primitives.Export.get_Value () [0x00000] in <filename unknown>:0 
  at System.ComponentModel.Composition.ExportServices.GetExportedValueFromLazy[IExtension] (System.ComponentModel.Composition.Primitives.Export export) [0x00000] in <filename unknown>:0 
  at System.ComponentModel.Composition.ExportServices+<>c__DisplayClass4`2[MetaGeek.inSSIDer.Common.Extensions.IExtension,MetaGeek.inSSIDer.Common.Extensions.IInssiderExtensionMetadata].<CreateStronglyTypedExportOfTM>b__1 () [0x00000] in <filename unknown>:0 
  at System.Lazy`1[MetaGeek.inSSIDer.Common.Extensions.IExtension].get_Value () [0x00000] in <filename unknown>:0 
  at MetaGeek.inSSIDer.View.Widgets.MainView.AddExtensions (IEnumerable`1 extensions) [0x00000] in <filename unknown>:0 
  at MetaGeek.inSSIDer.View.Widgets.MainView.InitializeComponents (IEnumerable`1 extensions) [0x00000] in <filename unknown>:0 
  at MetaGeek.inSSIDer.Controller.MainViewController.Init () [0x00000] in <filename unknown>:0 
  at MetaGeek.inSSIDer.Inssider..ctor () [0x00000] in <filename unknown>:0 
  at MetaGeek.inSSIDer.Inssider.Main (System.String[] args) [0x00000] in <filename unknown>:0