Hello everybody!
I just installed the new Banshee 1.5.0 from http://ppa.launchpad.net/banshee-unstable-team/ppa/ubuntu on Ubuntu 9.04 32 bit desktop

When I try to run Banshee after installation it crashes immediately after showing up the gui. Then the application is closed completely.

When I run banshee-1 --debug on console it gives me the following message:

** Running Mono with --debug   **
[Info  11:57:35.489] Running Banshee 1.5.0: [Ubuntu 9.04 (linux-gnu, i486) @ 2009-06-04 08:49:12 UTC]
[Debug 11:57:36.342] Bus.Session.RequestName ('org.bansheeproject.Banshee') replied with PrimaryOwner
[Debug 11:57:36.349] Core service started (DBusServiceManager, 0,001198s)
[Debug 11:57:36.351] Registering remote object /org/bansheeproject/Banshee/DBusCommandService (Banshee.ServiceStack.DBusCommandService) on org.bansheeproject.Banshee
[Debug 11:57:36.360] Core service started (DBusCommandService, 0,010314s)
[Debug 11:57:36.428] Opened SQLite connection to /home/eike/.config/banshee-1/banshee.db
[Debug 11:57:36.428] Core service started (DbConnection, 0,06818s)
[Debug 11:57:36.431] Database version 32 is up to date
[Debug 11:57:36.456] Core service started (PreferenceService, 0,01144s)
[Debug 11:57:36.457] Registering remote object /org/bansheeproject/Banshee/SourceManager (Banshee.Sources.SourceManager) on org.bansheeproject.Banshee
[Debug 11:57:36.457] Core service started (SourceManager, 0,000517s)
[Debug 11:57:36.457] Core service started (MediaProfileManager, 0,000123s)
[Debug 11:57:36.458] Registering remote object /org/bansheeproject/Banshee/PlayerEngine (Banshee.MediaEngine.PlayerEngineService) on org.bansheeproject.Banshee
[Debug 11:57:36.461] Core service started (PlayerEngine, 0,003519s)
[Debug 11:57:36.464] Configuration client extension loaded (Banshee.GnomeBackend.GConfConfigurationClient)
[Debug 11:57:36.514] IO provider extension loaded (Banshee.IO.Unix.Provider)
[Debug 11:57:36.520] Core service started (TranscoderService, 0,007339s)
[Debug 11:57:36.522] Registering remote object /org/bansheeproject/Banshee/PlaybackController (Banshee.PlaybackController.PlaybackControllerService) on org.bansheeproject.Banshee
[Debug 11:57:36.522] Core service started (PlaybackController, 0,002176s)
[Debug 11:57:36.523] Core service started (ImportSourceManager, 0,000391s)
[Debug 11:57:36.528] Core service started (LibraryImportManager, 0,004948s)
[Debug 11:57:36.528] Core service started (JobScheduler, 0,000669s)
[Debug 11:57:36.536] Core service started (HardwareManager, 0,007528s)
[Debug 11:57:36.538] Bus.Session.RequestName ('org.bansheeproject.CollectionIndexer') replied with PrimaryOwner
[Debug 11:57:36.539] Registering remote object /org/bansheeproject/Banshee/CollectionIndexerService (Banshee.Collection.Indexer.CollectionIndexerService) on org.bansheeproject.CollectionIndexer
[Debug 11:57:36.543] Core service started (CollectionIndexerService, 0,00671s)
[Debug 11:57:36.544] Core service started (SaveMetadataService, 0,001019s)
[Debug 11:57:36.557] Core service started (GtkElementsService, 0,012787s)
[Debug 11:57:36.598] Core service started (InterfaceActionService, 0,040166s)
[Debug 11:57:36.599] Album artwork path set to /home/eike/.cache/album-art
[Debug 11:57:36.599] Core service started (ArtworkManager, 0,001276s)
[Debug 11:57:36.821] Adding context page lastfm-recommendations
[Debug 11:57:37.046] Registering remote object /org/bansheeproject/Banshee/ClientWindow (Nereid.PlayerInterface) on org.bansheeproject.Banshee
[Debug 11:57:37.046] Core service started (NereidPlayerInterface, 0,44744s)
[Debug 11:57:37.074] Extension service started (GStreamerCoreService, 0,026656s)
[Debug 11:57:37.078] Extension service started (BpmService, 0,00431s)
[Debug 11:57:37.081] Using GNOME 2.22 API for Multimedia Keys
[Debug 11:57:37.082] Extension service started (MultimediaKeysService, 0,003572s)
[Debug 11:57:37.084] Extension service started (PodcastService, 0,001659s)
[Debug 11:57:37.085] Extension service started (DapService, 0,000208s)
[Debug 11:57:37.085] Extension service started (DaapService, 0,00048s)
[Debug 11:57:37.088] Extension service started (GnomeService, 0,003079s)
[Debug 11:57:37.102] Core service started (Network, 0,004179s)
[Debug 11:57:37.102] Audioscrobbler state: connected
[Debug 11:57:37.104] Extension service started (AudioscrobblerService, 0,015172s)
[Debug 11:57:37.111] Extension service started (NotificationAreaService, 0,007541s)
[Debug 11:57:37.122] Extension service started (BookmarksService, 0,010255s)
[Debug 11:57:37.123] Extension service started (CoverArtService, 0,000916s)
[Debug 11:57:37.155] Extension service started (AudioCdService, 0,031404s)
[Info  11:57:37.156] All services are started 0,812465s
[Debug 11:57:37.396] Registering remote object /org/bansheeproject/Banshee/SourceManager/PlayQueue (Banshee.PlayQueue.PlayQueueSource) on org.bansheeproject.Banshee
[Debug 11:57:37.413] Loaded IScreensaverManager: Banshee.GnomeBackend.GnomeScreensaverManager
[Debug 11:57:37.552] Creating Pango.Layout, configuring Cairo.Context
[Debug 11:57:37.570] Creating Pango.Layout, configuring Cairo.Context
[Debug 11:57:37.584] Creating Pango.Layout, configuring Cairo.Context
[Info  11:57:37.692] nereid Client Started
[Debug 11:57:37.693] Delayed Initializating Banshee.Podcasting.PodcastService
Exception in Gtk# callback delegate
  Note: Applications can use GLib.ExceptionManager.UnhandledException to handle the exception.
System.TypeInitializationException: An exception was thrown by the type initializer for Banshee.Podcasting.Gui.ColumnCellPodcast ---> System.NullReferenceException: Object reference not set to an instance of an object
  at Hyena.Gui.PixbufImageSurface..ctor (Gdk.Pixbuf pixbuf, Boolean disposePixbuf) [0x00000] 
  at Hyena.Gui.PixbufImageSurface..ctor (Gdk.Pixbuf pixbuf) [0x00000] 
  at Banshee.Podcasting.Gui.ColumnCellPodcast..cctor () [0x00000] 
  --- End of inner exception stack trace ---
  at Banshee.Podcasting.Gui.PodcastFeedView..ctor () [0x00000] 
  at Banshee.Podcasting.Gui.PodcastSourceContents.InitializeViews () [0x00000] 
  at Banshee.Sources.Gui.FilteredListSourceContents..ctor (System.String name) [0x00000] 
  at Banshee.Podcasting.Gui.PodcastSourceContents..ctor () [0x00000] 
  at Banshee.Podcasting.Gui.PodcastSource..ctor () [0x00000] 
  at Banshee.Podcasting.PodcastService.InitializeInterface () [0x00000] 
  at Banshee.Podcasting.PodcastService.DelayedInitialize () [0x00000] 
  at Banshee.ServiceStack.ServiceManager.DelayedInitialize (IService service) [0x00000] 
  at Banshee.ServiceStack.ServiceManager.DelayedInitialize () [0x00000] 
  at Banshee.ServiceStack.ServiceManager.OnClientStarted (Banshee.ServiceStack.Client client) [0x00000] 
  at Banshee.ServiceStack.Application.OnClientStarted (Banshee.ServiceStack.Client client) [0x00000] 
  at Banshee.ServiceStack.Client.OnStarted () [0x00000] 
  at Banshee.Gui.GtkBaseClient.<Run>m__112 () [0x00000] 
  at Banshee.Gui.GtkBaseClient+<RunIdle>c__AnonStorey33.<>m__115 () [0x00000] 
  at GLib.Idle+IdleProxy.Handler () [0x00000] 
   at GLib.ExceptionManager.RaiseUnhandledException(System.Exception e, Boolean is_terminal)
   at GLib.Idle+IdleProxy.Handler()
   at Gtk.Application.gtk_main()
   at Gtk.Application.Run()
   at Banshee.Gui.GtkBaseClient.Run()
   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.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()

Any ideas how to fix this?

Kind regards
Eike Lüders