Comment 3 for bug 1069168

The bug just append, now i have a stack trace :

[1 Info 11:23:01.634] Updating web proxy from GConf
[1 Debug 11:23:01.639] Direct connection, no proxy in use
[1 Debug 11:23:01.653] Extension service started (GnomeService, 0,022458)
[1 Debug 11:23:01.858] Extension service started (GStreamerCoreService, 0,205368)
[1 Debug 11:23:01.872] Extension service started (AudioCdService, 0,012919)
[1 Debug 11:23:01.873] Extension service started (DvdService, 0,001018)
[1 Info 11:23:01.874] All services are started 1,438274
[1 Warn 11:23:02.166] Forcefully breaking out of RCS loop b/c change in total_width less than 1.0
[1 Warn 11:23:02.321] Forcefully breaking out of RCS loop b/c change in total_width less than 1.0
[1 Debug 11:23:02.327] Creating Pango.Layout, configuring Cairo.Context
[1 Debug 11:23:02.551] Extension source loaded: Lecture en cours
[1 Debug 11:23:02.564] Extension source loaded: Radio
[1 Debug 11:23:02.567] Extension source loaded: eMusic
[1 Info 11:23:02.572] AmazonMP3 store redirect URL: https://one.ubuntu.com/music/store/amz/
[1 Debug 11:23:02.573] Extension source loaded: Boutique MP3 Amazon
[1 Debug 11:23:02.624] Extension source loaded: File d'attente du système de fichiers
[1 Debug 11:23:02.838] Registering remote object /org/bansheeproject/Banshee/SourceManager/PlayQueue (Banshee.PlayQueue.PlayQueueSource) on org.bansheeproject.Banshee
[1 Debug 11:23:02.838] Extension source loaded: File d'attente de lecture
[1 Debug 11:23:02.841] Starting GTK main loop
[1 Debug 11:23:02.987] Creating Pango.Layout, configuring Cairo.Context
[1 Debug 11:23:03.042] Creating Pango.Layout, configuring Cairo.Context
[1 Info 11:23:03.118] nereid Client Started
[1 Debug 11:23:03.119] Delayed Initializating Banshee.MediaEngine.PlayerEngineService
[1 Debug 11:23:03.138] (libbanshee:player) Audiosink has volume: YES
[1 Debug 11:23:03.155] (libbanshee:player) Using system (gst-plugins-good) equalizer element
[1 Debug 11:23:03.212] Player state change: NotReady -> Ready
[1 Debug 11:23:03.219] Loaded equalizer presets: 0,000259
[1 Debug 11:23:03.224] Selected equalizer: Rock
[1 Debug 11:23:03.228] Player state change: Ready -> Idle
[1 Debug 11:23:03.232] (libbanshee:player) Disabled ReplayGain
[1 Info 11:23:03.234] GStreamer version 0.10.36.0, gapless: True, replaygain: False
[1 Debug 11:23:03.237] Delayed Initializating Banshee.Dap.DapService
[1 Debug 11:23:03.244] Dap support extension loaded: Banshee.Dap.AppleDevice
[1 Debug 11:23:03.245] Dap support extension loaded: Banshee.Dap.Mtp
[1 Debug 11:23:03.247] Dap support extension loaded: Banshee.Dap.MassStorage
[1 Debug 11:23:04.251] Finished - Startup Job
[1 Debug 11:23:04.256] Starting - Téléchargement de la pochette
[7 Debug 11:23:04.263] Finished - Téléchargement de la pochette
[1 Warn 11:23:24.805] Forcefully breaking out of RCS loop b/c change in total_width less than 1.0
[1 Debug 11:23:24.906] Player state change: Idle -> Loading
[1 Debug 11:23:25.125] Player state change: Loading -> Loaded
[1 Debug 11:23:25.143] (libbanshee:player) [gapless] Triggering track-change signal
[1 Debug 11:23:25.177] Player state change: Loaded -> Playing
[1 Debug 11:23:25.190] Creating Pango.Layout, configuring Cairo.Context
[1 Debug 11:23:25.191] Creating Pango.Layout, configuring Cairo.Context
[1 Debug 11:23:26.200] TrackInfoDisplay RenderAnimation: 32,00 FPS
[16 Debug 11:27:36.024] (libbanshee:player) [Gapless] Requesting next track
[1 Debug 11:27:36.343] Querying model for track to play in off:Next mode
[1 Debug 11:27:38.115] (libbanshee:player) [gapless] Triggering track-change signal
[1 Debug 11:27:38.121] OnEventChanged called with StartOfStream. Replacing current_track with pending_track: "Ten Men"
[1 Debug 11:27:39.143] TrackInfoDisplay RenderAnimation: 32,00 FPS
[20 Debug 11:31:51.044] (libbanshee:player) [Gapless] Requesting next track
[1 Debug 11:31:51.359] Querying model for track to play in off:Next mode
[1 Debug 11:31:53.134] (libbanshee:player) [gapless] Triggering track-change signal
[1 Debug 11:31:53.139] OnEventChanged called with StartOfStream. Replacing current_track with pending_track: "Everybody Loves A Loser"
[1 Debug 11:31:54.153] TrackInfoDisplay RenderAnimation: 31,00 FPS
[16 Debug 11:36:25.711] (libbanshee:player) [Gapless] Requesting next track

Unhandled Exception: System.NullReferenceException: Object reference not set to an instance of an object
at Banshee.Collection.Indexer.CollectionIndexerService.OnLibraryChanged (object,Banshee.Sources.TrackEventArgs) [0x00057] in /build/buildd/banshee-2.6.0/src/Core/Banshee.Services/Banshee.Collection.Indexer/CollectionIndexerService.cs:216
at (wrapper delegate-invoke) <Module>.invoke_void__this___Source_TrackEventArgs (Banshee.Sources.Source,Banshee.Sources.TrackEventArgs) <IL 0x00044, 0x0005e>
at (wrapper delegate-invoke) <Module>.invoke_void__this___Source_TrackEventArgs (Banshee.Sources.Source,Banshee.Sources.TrackEventArgs) <IL 0x00059, 0x00095>
at (wrapper delegate-invoke) <Module>.invoke_void__this___Source_TrackEventArgs (Banshee.Sources.Source,Banshee.Sources.TrackEventArgs) <IL 0x00059, 0x00095>
at (wrapper delegate-invoke) <Module>.invoke_void__this___Source_TrackEventArgs (Banshee.Sources.Source,Banshee.Sources.TrackEventArgs) <IL 0x00059, 0x00095>
at Banshee.Sources.PrimarySource/<OnTracksChanged>c__AnonStorey24.<>m__46 () [0x0004d] in /build/buildd/banshee-2.6.0/src/Core/Banshee.Services/Banshee.Sources/PrimarySource.cs:428
at Hyena.ThreadAssist.SpawnFromMain (System.Threading.ThreadStart) [0x00017] in /build/buildd/banshee-2.6.0/src/Hyena/Hyena/Hyena/ThreadAssist.cs:112
at Banshee.Sources.PrimarySource.OnTracksChanged (Hyena.Query.QueryField[]) [0x00014] in /build/buildd/banshee-2.6.0/src/Core/Banshee.Services/Banshee.Sources/PrimarySource.cs:417
at Banshee.Sources.PrimarySource.NotifyTracksChanged (Hyena.Query.QueryField[]) [0x00000] in /build/buildd/banshee-2.6.0/src/Core/Banshee.Services/Banshee.Sources/PrimarySource.cs:354
at Banshee.Collection.Database.DatabaseTrackInfo.Save (bool,Hyena.Query.QueryField[]) [0x00118] in /build/buildd/banshee-2.6.0/src/Core/Banshee.Services/Banshee.Collection.Database/DatabaseTrackInfo.cs:225
at Banshee.Collection.Database.DatabaseTrackInfo.UpdateLastPlayed () [0x0000c] in /build/buildd/banshee-2.6.0/src/Core/Banshee.Services/Banshee.Collection.Database/DatabaseTrackInfo.cs:186
at Banshee.GStreamer.PlayerEngine.OnAboutToFinish (intptr) [0x00000] in /build/buildd/banshee-2.6.0/src/Backends/Banshee.GStreamer/Banshee.GStreamer/PlayerEngine.cs:436
at (wrapper native-to-managed) Banshee.GStreamer.PlayerEngine.OnAboutToFinish (intptr) <IL 0x00022, 0x0006f>

[ERROR] FATAL UNHANDLED EXCEPTION: System.NullReferenceException: Object reference not set to an instance of an object
at Banshee.Collection.Indexer.CollectionIndexerService.OnLibraryChanged (object,Banshee.Sources.TrackEventArgs) [0x00057] in /build/buildd/banshee-2.6.0/src/Core/Banshee.Services/Banshee.Collection.Indexer/CollectionIndexerService.cs:216
at (wrapper delegate-invoke) <Module>.invoke_void__this___Source_TrackEventArgs (Banshee.Sources.Source,Banshee.Sources.TrackEventArgs) <IL 0x00044, 0x0005e>
at (wrapper delegate-invoke) <Module>.invoke_void__this___Source_TrackEventArgs (Banshee.Sources.Source,Banshee.Sources.TrackEventArgs) <IL 0x00059, 0x00095>
at (wrapper delegate-invoke) <Module>.invoke_void__this___Source_TrackEventArgs (Banshee.Sources.Source,Banshee.Sources.TrackEventArgs) <IL 0x00059, 0x00095>
at (wrapper delegate-invoke) <Module>.invoke_void__this___Source_TrackEventArgs (Banshee.Sources.Source,Banshee.Sources.TrackEventArgs) <IL 0x00059, 0x00095>
at Banshee.Sources.PrimarySource/<OnTracksChanged>c__AnonStorey24.<>m__46 () [0x0004d] in /build/buildd/banshee-2.6.0/src/Core/Banshee.Services/Banshee.Sources/PrimarySource.cs:428
at Hyena.ThreadAssist.SpawnFromMain (System.Threading.ThreadStart) [0x00017] in /build/buildd/banshee-2.6.0/src/Hyena/Hyena/Hyena/ThreadAssist.cs:112
at Banshee.Sources.PrimarySource.OnTracksChanged (Hyena.Query.QueryField[]) [0x00014] in /build/buildd/banshee-2.6.0/src/Core/Banshee.Services/Banshee.Sources/PrimarySource.cs:417
at Banshee.Sources.PrimarySource.NotifyTracksChanged (Hyena.Query.QueryField[]) [0x00000] in /build/buildd/banshee-2.6.0/src/Core/Banshee.Services/Banshee.Sources/PrimarySource.cs:354
at Banshee.Collection.Database.DatabaseTrackInfo.Save (bool,Hyena.Query.QueryField[]) [0x00118] in /build/buildd/banshee-2.6.0/src/Core/Banshee.Services/Banshee.Collection.Database/DatabaseTrackInfo.cs:225
at Banshee.Collection.Database.DatabaseTrackInfo.UpdateLastPlayed () [0x0000c] in /build/buildd/banshee-2.6.0/src/Core/Banshee.Services/Banshee.Collection.Database/DatabaseTrackInfo.cs:186
at Banshee.GStreamer.PlayerEngine.OnAboutToFinish (intptr) [0x00000] in /build/buildd/banshee-2.6.0/src/Backends/Banshee.GStreamer/Banshee.GStreamer/PlayerEngine.cs:436
at (wrapper native-to-managed) Banshee.GStreamer.PlayerEngine.OnAboutToFinish (intptr) <IL 0x00022, 0x0006f>