This report had originally filled at:
https://bugs.launchpad.net/ubuntu/+source/banshee/+bug/738486


When enabling Cutter-flow plugin in Banshee's preferences it crashes.
And every time Banshee is executed, it crashes in less than 2 seconds.

User Backtrace:
:~$ banshee
[Info 16:05:11.578] Running Banshee 1.9.5: [Ubuntu Natty (development branch) (linux-gnu, x86_64) @ 2011-03-11 13:57:57 UTC]
[Info 16:05:11.997] Starting collection of anonymous usage data
[Warn 16:05:12.111] Hardware manager extension failed to load - System.InvalidOperationException: Type 'Banshee.Hardware.Gio.HardwareManager' not found in add-in 'Banshee.Gio,1.0' (in `Mono.Addins')
  at Mono.Addins.RuntimeAddin.GetType (System.String typeName, Boolean throwIfNotFound) [0x00000] in <filename unknown>:0
  at Mono.Addins.TypeExtensionNode.get_Type () [0x00000] in <filename unknown>:0
  at Mono.Addins.TypeExtensionNode.CreateInstance () [0x00000] in <filename unknown>:0
  at Mono.Addins.InstanceExtensionNode.CreateInstance (System.Type expectedType) [0x00000] in <filename unknown>:0
  at Banshee.Hardware.HardwareManager..ctor () [0x00000] in <filename unknown>:0
[Warn 16:05:12.112] Service `Banshee.Hardware.HardwareManager' not started: No HardwareManager extensions could be loaded. Hardware support will be disabled.
[Warn 16:05:12.113] Caught an exception - System.Exception: No HardwareManager extensions could be loaded. Hardware support will be disabled. (in `Banshee.Services')
  at Banshee.Hardware.HardwareManager..ctor () [0x00000] in <filename unknown>:0
  at (wrapper managed-to-native) System.Reflection.MonoCMethod:InternalInvoke (object,object[],System.Exception&)
  at System.Reflection.MonoCMethod.Invoke (System.Object obj, BindingFlags invokeAttr, System.Reflection.Binder binder, System.Object[] parameters, System.Globalization.CultureInfo culture) [0x00000] in <filename unknown>:0
[Info 16:05:13.130] Updating web proxy from GConf
[Warn 16:05:13.250] Caught an exception - System.NullReferenceException: Object reference not set to an instance of an object (in `Banshee.AudioCd')
  at Banshee.AudioCd.AudioCdService.Initialize () [0x00000] in <filename unknown>:0
  at Banshee.ServiceStack.ServiceManager.StartExtension (Mono.Addins.TypeExtensionNode node) [0x00000] in <filename unknown>:0
[Warn 16:05:13.250] Extension `Banshee.AudioCd.AudioCdService' not started: Object reference not set to an instance of an object
[Warn 16:05:13.369] Caught an exception - System.NullReferenceException: Object reference not set to an instance of an object (in `Banshee.AudioCd')
  at Banshee.AudioCd.AudioCdService.Initialize () [0x00000] in <filename unknown>:0
  at Banshee.ServiceStack.ServiceManager.StartExtension (Mono.Addins.TypeExtensionNode node) [0x00000] in <filename unknown>:0
[Warn 16:05:13.369] Extension `Banshee.AudioCd.AudioCdService' not started: Object reference not set to an instance of an object
[Info 16:05:13.371] All services are started 1.504223
The program 'Banshee' received an X Window System error.
This probably reflects a bug in the program.
The error was 'BadDrawable (invalid Pixmap or Window parameter)'.
(Details: serial 4037 error_code 9 request_code 137 minor_code 9)
(Note to programmers: normally, X errors are reported asynchronously;
that is, you will receive the error a while after causing it.
To debug your program, run it with the --sync command line
option to change this behavior. You can then get a meaningful
backtrace from your debugger if you break on the gdk_x_error() function.)


Upstreamer Backtrace:
[1 Debug 15:30:07.929] (libbanshee:player) [gapless] Triggering track-change signal
[1 Info  15:30:07.984] Uncached artwork size 193 requested
[1 Info  15:30:08.029] Uncached artwork size 39 requested
[1 Debug 15:30:08.036] Player state change: Loaded -> Playing
[1 Debug 15:30:08.050] Creating Pango.Layout, configuring Cairo.Context
[1 Debug 15:30:08.050] Creating Pango.Layout, configuring Cairo.Context
[1 Debug 15:30:09.002] TrackInfoDisplay RenderAnimation: 30.00 FPS
[1 Debug 15:30:09.033] TrackInfoDisplay RenderAnimation: 30.00 FPS
[4 Debug 15:30:16.586] Audioscrobbler sign-on succeeded - Session ID received
[4 Debug 15:30:18.069] Submitted NowPlaying track to Audioscrobbler
[1 Debug 15:31:29.688] Initialized MediaProfileManager: 0.155728
[1 Debug 15:31:29.718] GStreamer pipeline does not run: audioconvert ! novellaacenc bitrate=128000 profile=2 outputformat=0 ! novellqtmux
[1 Debug 15:31:29.817] GStreamer pipeline does not run: audioconvert ! xingenc bitrate=128 ! id3v2mux
[1 Debug 15:31:29.894] GStreamer pipeline does not run: audioconvert ! fluwmaenc bitrate=64000 vbr=false ! fluasfmux
Stacktrace:

  at (wrapper managed-to-native) ClutterFlow.ClutterHelper.gtk_clutter_init (intptr,intptr) <0x00004>
  at (wrapper managed-to-native) ClutterFlow.ClutterHelper.gtk_clutter_init (intptr,intptr) <0x00004>
  at Banshee.ClutterFlow.ClutterFlowManager.Init () <IL 0x00029, 0x00035>
  at Banshee.ClutterFlow.ClutterFlowService..ctor () <IL 0x00006, 0x0000a>
  at (wrapper runtime-invoke) object.runtime_invoke_void__this__ (object,intptr,intptr,intptr) <IL 0x0001c, 0x00040>
  at (wrapper managed-to-native) System.Reflection.MonoCMethod.InternalInvoke (object,object[],System.Exception&) <0x00004>
  at (wrapper managed-to-native) System.Reflection.MonoCMethod.InternalInvoke (object,object[],System.Exception&) <0x00004>
  at System.Reflection.MonoCMethod.Invoke (object,System.Reflection.BindingFlags,System.Reflection.Binder,object[],System.Globalization.CultureInfo) <IL 0x0011f, 0x0018b>
  at System.Reflection.MonoCMethod.Invoke (System.Reflection.BindingFlags,System.Reflection.Binder,object[],System.Globalization.CultureInfo) <IL 0x00007, 0x00027>
  at System.Reflection.ConstructorInfo.Invoke (object[]) <IL 0x00017, 0x00042>
  at System.Activator.CreateInstance (System.Type,bool) <IL 0x000b7, 0x00184>
  at System.Activator.CreateInstance (System.Type) <IL 0x00002, 0x00012>
  at Mono.Addins.TypeExtensionNode.CreateInstance () <IL 0x00001, 0x0001c>
  at Mono.Addins.InstanceExtensionNode.CreateInstance (System.Type) <IL 0x00001, 0x00015>
  at Banshee.ServiceStack.ServiceManager.StartExtension (Mono.Addins.TypeExtensionNode) [0x0001e] in /build/buildd/banshee-1.9.5/src/Core/Banshee.Services/Banshee.ServiceStack/ServiceManager.cs:209
  at Banshee.ServiceStack.ServiceManager.OnExtensionChanged (object,Mono.Addins.ExtensionNodeEventArgs) [0x00023] in /build/buildd/banshee-1.9.5/src/Core/Banshee.Services/Banshee.ServiceStack/ServiceManager.cs:236
  at Mono.Addins.ExtensionNode.OnChildNodeAdded (Mono.Addins.ExtensionNode) <IL 0x00019, 0x00054>
  at Mono.Addins.ExtensionNode.NotifyChildChanged () <IL 0x000b0, 0x00270>
  at Mono.Addins.TreeNode.NotifyChildrenChanged () <IL 0x00011, 0x00020>
  at Mono.Addins.ExtensionTree.LoadExtensionElement (Mono.Addins.TreeNode,string,Mono.Addins.Description.ExtensionNodeDescriptionCollection,int&,Mono.Addins.BaseCondition,bool,System.Collections.ArrayList) <IL 0x0025a, 0x00520>
  at Mono.Addins.ExtensionTree.LoadExtension (string,Mono.Addins.Description.Extension,System.Collections.ArrayList) <IL 0x0004b, 0x00096>
  at Mono.Addins.ExtensionContext.LoadModuleExtensionNodes (Mono.Addins.Description.Extension,string,Mono.Addins.Description.ExtensionNodeSet,System.Collections.ArrayList) <IL 0x0000f, 0x0004a>
  at Mono.Addins.ExtensionContext.ActivateAddinExtensions (string) <IL 0x001bf, 0x00702>
  at Mono.Addins.AddinSessionService.ActivateAddin (string) <IL 0x00007, 0x00019>
  at Mono.Addins.Database.AddinDatabase.EnableAddin (string,string,bool) <IL 0x000e8, 0x0031f>
  at Mono.Addins.Addin.set_Enabled (bool) <IL 0x00023, 0x0005f>
  at Banshee.Addins.Gui.AddinView/<AddinView>c__AnonStorey7.<>m__5 (object,Gtk.ToggledArgs) [0x00043] in /build/buildd/banshee-1.9.5/src/Core/Banshee.ThickClient/Banshee.Addins.Gui/AddinView.cs:130
  at (wrapper runtime-invoke) <Module>.runtime_invoke_void__this___object_object (object,intptr,intptr,intptr) <IL 0x00022, 0x0004c>
  at (wrapper managed-to-native) System.Reflection.MonoMethod.InternalInvoke (object,object[],System.Exception&) <0x00004>
  at (wrapper managed-to-native) System.Reflection.MonoMethod.InternalInvoke (object,object[],System.Exception&) <0x00004>
  at System.Reflection.MonoMethod.Invoke (object,System.Reflection.BindingFlags,System.Reflection.Binder,object[],System.Globalization.CultureInfo) <IL 0x000d6, 0x0012a>
  at System.Reflection.MethodBase.Invoke (object,object[]) <IL 0x00006, 0x00025>
  at System.Delegate.DynamicInvokeImpl (object[]) <IL 0x000ba, 0x0018a>
  at System.MulticastDelegate.DynamicInvokeImpl (object[]) <IL 0x0001a, 0x00034>
  at System.Delegate.DynamicInvoke (object[]) <IL 0x00002, 0x00019>
  at GLib.Signal.ClosureInvokedCB (object,GLib.ClosureInvokedArgs) <IL 0x0004f, 0x00126>
  at GLib.SignalClosure.Invoke (GLib.ClosureInvokedArgs) <IL 0x00014, 0x00023>
  at GLib.SignalClosure.MarshalCallback (intptr,intptr,uint,intptr,intptr,intptr) <IL 0x00147, 0x004d6>
  at (wrapper native-to-managed) GLib.SignalClosure.MarshalCallback (intptr,intptr,uint,intptr,intptr,intptr) <IL 0x0001e, 0x00052>
  at (wrapper managed-to-native) Gtk.Dialog.gtk_dialog_run (intptr) <0x00004>
  at (wrapper managed-to-native) Gtk.Dialog.gtk_dialog_run (intptr) <0x00004>
  at Gtk.Dialog.Run () <IL 0x00006, 0x00016>
  at Banshee.Gui.Dialogs.BansheeDialog.Run () [0x00000] in /build/buildd/banshee-1.9.5/src/Core/Banshee.ThickClient/Banshee.Gui.Dialogs/BansheeDialog.cs:102
  at Banshee.Gui.GlobalActions.OnPreferences (object,System.EventArgs) [0x00006] in /build/buildd/banshee-1.9.5/src/Core/Banshee.ThickClient/Banshee.Gui/GlobalActions.cs:207
  at (wrapper runtime-invoke) <Module>.runtime_invoke_void__this___object_object (object,intptr,intptr,intptr) <IL 0x00022, 0x0004c>
  at (wrapper managed-to-native) System.Reflection.MonoMethod.InternalInvoke (object,object[],System.Exception&) <0x00004>
  at (wrapper managed-to-native) System.Reflection.MonoMethod.InternalInvoke (object,object[],System.Exception&) <0x00004>
  at System.Reflection.MonoMethod.Invoke (object,System.Reflection.BindingFlags,System.Reflection.Binder,object[],System.Globalization.CultureInfo) <IL 0x000d6, 0x0012a>
  at System.Reflection.MethodBase.Invoke (object,object[]) <IL 0x00006, 0x00025>
  at System.Delegate.DynamicInvokeImpl (object[]) <IL 0x000ba, 0x0018a>
  at System.MulticastDelegate.DynamicInvokeImpl (object[]) <IL 0x0001a, 0x00034>
  at System.Delegate.DynamicInvoke (object[]) <IL 0x00002, 0x00019>
  at GLib.Signal.ClosureInvokedCB (object,GLib.ClosureInvokedArgs) <IL 0x0004f, 0x00126>
  at GLib.SignalClosure.Invoke (GLib.ClosureInvokedArgs) <IL 0x00014, 0x00023>
  at GLib.SignalClosure.MarshalCallback (intptr,intptr,uint,intptr,intptr,intptr) <IL 0x00081, 0x00228>
  at (wrapper native-to-managed) GLib.SignalClosure.MarshalCallback (intptr,intptr,uint,intptr,intptr,intptr) <IL 0x0001e, 0x00052>
  at (wrapper managed-to-native) Gtk.Application.gtk_main () <0x00004>
  at (wrapper managed-to-native) Gtk.Application.gtk_main () <0x00004>
  at Gtk.Application.Run () <IL 0x00000, 0x0000a>
  at Banshee.Gui.GtkBaseClient.Run () [0x00013] in /build/buildd/banshee-1.9.5/src/Core/Banshee.ThickClient/Banshee.Gui/GtkBaseClient.cs:206
  at Banshee.Gui.GtkBaseClient.Startup () [0x00000] in /build/buildd/banshee-1.9.5/src/Core/Banshee.ThickClient/Banshee.Gui/GtkBaseClient.cs:82
  at Hyena.Gui.CleanRoomStartup.Startup (Hyena.Gui.CleanRoomStartup/StartupInvocationHandler) [0x00044] in /build/buildd/banshee-1.9.5/src/Hyena/Hyena.Gui/Hyena.Gui/CleanRoomStartup.cs:54
  at Banshee.Gui.GtkBaseClient.Startup<object> () [0x00024] in /build/buildd/banshee-1.9.5/src/Core/Banshee.ThickClient/Banshee.Gui/GtkBaseClient.cs:77
  at Banshee.Gui.GtkBaseClient.Startup<object> (string[]) [0x0004d] in /build/buildd/banshee-1.9.5/src/Core/Banshee.ThickClient/Banshee.Gui/GtkBaseClient.cs:67
  at Nereid.Client.Main (string[]) [0x00000] in /build/buildd/banshee-1.9.5/src/Clients/Nereid/Nereid/Client.cs:54
  at (wrapper runtime-invoke) <Module>.runtime_invoke_void_object (object,intptr,intptr,intptr) <IL 0x0001d, 0x00043>
  at (wrapper managed-to-native) System.AppDomain.ExecuteAssembly (System.Reflection.Assembly,string[]) <0x00004>
  at (wrapper managed-to-native) System.AppDomain.ExecuteAssembly (System.Reflection.Assembly,string[]) <0x00004>
  at System.AppDomain.ExecuteAssemblyInternal (System.Reflection.Assembly,string[]) <IL 0x00029, 0x0002e>
  at System.AppDomain.ExecuteAssembly (string,System.Security.Policy.Evidence,string[]) <IL 0x0000b, 0x00025>
  at (wrapper remoting-invoke-with-check) System.AppDomain.ExecuteAssembly (string,System.Security.Policy.Evidence,string[]) <IL 0x00035, 0x00067>
  at System.AppDomain.ExecuteAssembly (string) <IL 0x00004, 0x00019>
  at (wrapper remoting-invoke-with-check) System.AppDomain.ExecuteAssembly (string) <IL 0x00033, 0x00057>
  at Booter.Booter.BootClient (string) [0x00000] in /build/buildd/banshee-1.9.5/src/Clients/Booter/Booter/Entry.cs:112
  at Booter.Booter.Main () [0x000f6] in /build/buildd/banshee-1.9.5/src/Clients/Booter/Booter/Entry.cs:105
  at (wrapper runtime-invoke) object.runtime_invoke_void (object,intptr,intptr,intptr) <IL 0x0001b, 0x0003a>

Native stacktrace:

	banshee-1() [0x80dbc5b]
	banshee-1() [0x81136eb]
	[0xb780840c]

Debug info from gdb:

Could not attach to process.  If your uid matches the uid of the target
process, check the setting of /proc/sys/kernel/yama/ptrace_scope, or try
again as the root user.  For more details, see /etc/sysctl.d/10-ptrace.conf
ptrace: Operation not permitted.

=================================================================
Got a SIGSEGV while executing native code. This usually indicates
a fatal error in the mono runtime or one of the native libraries 
used by your application.
=================================================================