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) .invoke_void__this___Source_TrackEventArgs (Banshee.Sources.Source,Banshee.Sources.TrackEventArgs) at (wrapper delegate-invoke) .invoke_void__this___Source_TrackEventArgs (Banshee.Sources.Source,Banshee.Sources.TrackEventArgs) at (wrapper delegate-invoke) .invoke_void__this___Source_TrackEventArgs (Banshee.Sources.Source,Banshee.Sources.TrackEventArgs) at (wrapper delegate-invoke) .invoke_void__this___Source_TrackEventArgs (Banshee.Sources.Source,Banshee.Sources.TrackEventArgs) at Banshee.Sources.PrimarySource/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) [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) .invoke_void__this___Source_TrackEventArgs (Banshee.Sources.Source,Banshee.Sources.TrackEventArgs) at (wrapper delegate-invoke) .invoke_void__this___Source_TrackEventArgs (Banshee.Sources.Source,Banshee.Sources.TrackEventArgs) at (wrapper delegate-invoke) .invoke_void__this___Source_TrackEventArgs (Banshee.Sources.Source,Banshee.Sources.TrackEventArgs) at (wrapper delegate-invoke) .invoke_void__this___Source_TrackEventArgs (Banshee.Sources.Source,Banshee.Sources.TrackEventArgs) at Banshee.Sources.PrimarySource/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)