Originally reported at:
  https://bugs.launchpad.net/bugs/873787

Banshee just worked once.
After rebooting, running banshee from a terminal prints this:

(Banshee:2284): Gtk-WARNING **: Imposible encontrar el motor de temas en la ruta al _modulo: «pixmap»,
Exception in Gtk# callback delegate
  Note: Applications can use GLib.ExceptionManager.UnhandledException to handle the exception.
System.ArgumentException: Value does not fall within the expected range.
  at Hyena.Gui.Canvas.Rect.set_Height (Double value) [0x00000] in <filename unknown>:0 
  at Hyena.Gui.Canvas.Rect.op_Explicit (Rectangle rect) [0x00000] in <filename unknown>:0 
  at Hyena.Data.Gui.ListView`1[Banshee.Collection.AlbumInfo].OnSizeAllocated (Rectangle allocation) [0x00000] in <filename unknown>:0 
  at Gtk.Widget.sizeallocated_cb (IntPtr widget, IntPtr allocation) [0x00000] in <filename unknown>:0 
   at GLib.ExceptionManager.RaiseUnhandledException(System.Exception e, Boolean is_terminal)
   at Gtk.Widget.sizeallocated_cb(IntPtr widget, IntPtr allocation)
   at Gtk.Widget.gtksharp_widget_base_show(IntPtr )
   at Gtk.Widget.OnShown()
   at Nereid.PlayerInterface.OnShown()
   at Gtk.Widget.shown_cb(IntPtr widget)
   at Gtk.Widget.gtk_widget_show(IntPtr )
   at Gtk.Widget.Show()
   at Banshee.Gui.BaseClientWindow.InitialShowPresent()
   at Nereid.PlayerInterface.Initialize()
   at Banshee.Gui.BaseClientWindow.InitializeWindow()
   at Banshee.Gui.BaseClientWindow..ctor(System.String title, System.String configNameSpace, Int32 defaultWidth, Int32 defaultHeight)
   at Nereid.PlayerInterface..ctor()
   at System.Reflection.MonoCMethod.InternalInvoke(System.Reflection.MonoCMethod , System.Object , System.Object[] , System.Exception ByRef )
   at System.Reflection.MonoCMethod.Invoke(System.Object obj, BindingFlags invokeAttr, System.Reflection.Binder binder, System.Object[] parameters, System.Globalization.CultureInfo culture)
   at System.Reflection.MonoCMethod.Invoke(BindingFlags invokeAttr, System.Reflection.Binder binder, System.Object[] parameters, System.Globalization.CultureInfo culture)
   at System.Reflection.ConstructorInfo.Invoke(System.Object[] parameters)
   at System.Activator.CreateInstance(System.Type type, Boolean nonPublic)
   at System.Activator.CreateInstance(System.Type type)
   at Banshee.ServiceStack.ServiceManager.RegisterService(System.Type type)
   at Banshee.ServiceStack.ServiceManager.Run()
   at Banshee.ServiceStack.Application.Run()
   at Banshee.Gui.GtkBaseClient.Initialize(Boolean registerCommonServices)
   at Banshee.Gui.GtkBaseClient..ctor(Boolean initializeDefault, System.String defaultIconName)
   at Banshee.Gui.GtkBaseClient..ctor()
   at Nereid.Client..ctor()
   at System.Reflection.MonoCMethod.InternalInvoke(System.Reflection.MonoCMethod , System.Object , System.Object[] , System.Exception ByRef )
   at System.Reflection.MonoCMethod.Invoke(System.Object obj, BindingFlags invokeAttr, System.Reflection.Binder binder, System.Object[] parameters, System.Globalization.CultureInfo culture)
   at System.Reflection.MonoCMethod.Invoke(BindingFlags invokeAttr, System.Reflection.Binder binder, System.Object[] parameters, System.Globalization.CultureInfo culture)
   at System.Reflection.ConstructorInfo.Invoke(System.Object[] parameters)
   at System.Activator.CreateInstance(System.Type type, Boolean nonPublic)
   at System.Activator.CreateInstance(System.Type type)
   at Banshee.Gui.GtkBaseClient.Startup()
   at Hyena.Gui.CleanRoomStartup.Startup(Hyena.Gui.StartupInvocationHandler startup)
   at Banshee.Gui.GtkBaseClient.Startup()
   at Banshee.Gui.GtkBaseClient.Startup(System.String[] args)
   at Nereid.Client.Main(System.String[] args)
   at System.AppDomain.ExecuteAssembly(System.AppDomain , System.Reflection.Assembly , System.String[] )
   at System.AppDomain.ExecuteAssemblyInternal(System.Reflection.Assembly a, System.String[] args)
   at System.AppDomain.ExecuteAssembly(System.String assemblyFile, System.Security.Policy.Evidence assemblySecurity, System.String[] args)
   at System.AppDomain.ExecuteAssembly(System.String assemblyFile)
   at Booter.Booter.BootClient(System.String clientName)
   at Booter.Booter.Main()

ProblemType: Bug
DistroRelease: Ubuntu 11.10
Package: banshee 2.2.0-1ubuntu2
ProcVersionSignature: Ubuntu 3.0.0-12.20-generic 3.0.4
Uname: Linux 3.0.0-12-generic x86_64
NonfreeKernelModules: fglrx
ApportVersion: 1.23-0ubuntu3
Architecture: amd64
Date: Thu Oct 13 20:34:59 2011
InstallationMedia: Ubuntu 11.10 "Oneiric Ocelot" - Release amd64 (20111012)
ProcEnviron:
 LANGUAGE=es_PE:es
 PATH=(custom, no user)
 LANG=es_PE.UTF-8
 SHELL=/bin/bash
SourcePackage: banshee
UpgradeStatus: No upgrade log present (probably fresh install)