ERROR [2012-03-29 09:35:09Z]: Gtk-Critical: IA__gtk_tree_view_column_set_fixed_width: assertion `fixed_width > 0' failed
Stack trace:
   at Gtk.TreeViewColumn.set_FixedWidth(Int32 value)
   at MonoDevelop.Debugger.ObjectValueTreeView.AdjustColumnSizes() in /build/src/monodevelop-2.8.6.5/src/addins/MonoDevelop.Debugger/MonoDevelop.Debugger/ObjectValueTreeView.cs:line 279
   at MonoDevelop.Debugger.ObjectValueTreeView.OnSizeAllocated(Rectangle allocation) in /build/src/monodevelop-2.8.6.5/src/addins/MonoDevelop.Debugger/MonoDevelop.Debugger/ObjectValueTreeView.cs:line 236
   at Gtk.Widget.sizeallocated_cb(IntPtr widget, IntPtr allocation)
   at Gtk.Widget.gtk_widget_size_allocate(IntPtr , IntPtr )
   at Gtk.Widget.SizeAllocate(Rectangle allocation)
   at MonoDevelop.Components.Docking.CustomFrame.OnSizeAllocated(Rectangle allocation) in /build/src/monodevelop-2.8.6.5/src/core/MonoDevelop.Ide/MonoDevelop.Components.Docking/DockItemContainer.cs:line 384
   at Gtk.Widget.sizeallocated_cb(IntPtr widget, IntPtr allocation)
   at Gtk.Application.gtk_main_iteration_do(Boolean )
   at Gtk.Application.RunIteration(Boolean blocking)
   at MonoDevelop.Ide.DispatchService.RunPendingEvents() in /build/src/monodevelop-2.8.6.5/src/core/MonoDevelop.Ide/MonoDevelop.Ide/DispatchService.cs:line 131
   at MonoDevelop.Ide.ProgressMonitoring.BaseProgressMonitor.Dispose() in /build/src/monodevelop-2.8.6.5/src/core/MonoDevelop.Ide/MonoDevelop.Ide.ProgressMonitoring/BaseProgressMonitor.cs:line 157
   at System.Object.__icall_wrapper_mono_remoting_wrapper(IntPtr , IntPtr )
   at MonoDevelop.Core.ProgressMonitoring.AggregatedProgressMonitor.Dispose() in /build/src/monodevelop-2.8.6.5/src/core/MonoDevelop.Core/MonoDevelop.Core.ProgressMonitoring/AggregatedProgressMonitor.cs:line 161
   at MonoDevelop.Ide.ProjectOperations.BuildDone(IProgressMonitor monitor, MonoDevelop.Projects.BuildResult result, IBuildTarget entry, ITimeTracker tt) in /build/src/monodevelop-2.8.6.5/src/core/MonoDevelop.Ide/MonoDevelop.Ide/ProjectOperations.cs:line 1285
   at MonoDevelop.Ide.ProjectOperations+<BuildSolutionItemAsync>c__AnonStoreyC5.<>m__1AC() in /build/src/monodevelop-2.8.6.5/src/core/MonoDevelop.Ide/MonoDevelop.Ide/ProjectOperations.cs:line 1142
   at MonoDevelop.Ide.GenericMessageContainer.Run() in /build/src/monodevelop-2.8.6.5/src/core/MonoDevelop.Ide/MonoDevelop.Ide/DispatchService.cs:line 334
   at MonoDevelop.Ide.DispatchService.guiDispatcher() in /build/src/monodevelop-2.8.6.5/src/core/MonoDevelop.Ide/MonoDevelop.Ide/DispatchService.cs:line 259
   at MonoDevelop.Ide.DispatchService.RunPendingEvents() in /build/src/monodevelop-2.8.6.5/src/core/MonoDevelop.Ide/MonoDevelop.Ide/DispatchService.cs:line 134
   at MonoDevelop.Ide.ProgressMonitoring.BaseProgressMonitor.RunPendingEvents() in /build/src/monodevelop-2.8.6.5/src/core/MonoDevelop.Ide/MonoDevelop.Ide.ProgressMonitoring/BaseProgressMonitor.cs:line 323
   at MonoDevelop.Ide.Gui.StatusProgressMonitor.OnProgressChanged() in /build/src/monodevelop-2.8.6.5/src/core/MonoDevelop.Ide/MonoDevelop.Ide.Gui/StatusProgressMonitor.cs:line 68
   at System.Runtime.Remoting.RemotingServices.InternalExecute(System.Reflection.MethodBase , System.Object , System.Object[] , System.Object[] ByRef )
   at System.Runtime.Remoting.RemotingServices.InternalExecuteMessage(System.MarshalByRefObject target, IMethodCallMessage reqMsg) in /build/src/mono-2.10.8/mcs/class/corlib/System.Runtime.Remoting/RemotingServices.cs:line 138
   at System.Runtime.Remoting.Messaging.StackBuilderSink.SyncProcessMessage(IMessage msg) in /build/src/mono-2.10.8/mcs/class/corlib/System.Runtime.Remoting.Messaging/StackBuilderSink.cs:line 59
   at System.Runtime.Remoting.Messaging.ServerObjectTerminatorSink.SyncProcessMessage(IMessage msg) in /build/src/mono-2.10.8/mcs/class/corlib/System.Runtime.Remoting.Messaging/ServerObjectTerminatorSink.cs:line 53
   at System.Runtime.Remoting.Lifetime.LeaseSink.SyncProcessMessage(IMessage msg) in /build/src/mono-2.10.8/mcs/class/corlib/System.Runtime.Remoting.Lifetime/LeaseSink.cs:line 52
   at MonoDevelop.Ide.Gui.SyncContextDispatchSink.DispatchMessage(System.Object data) in /build/src/monodevelop-2.8.6.5/src/core/MonoDevelop.Ide/MonoDevelop.Ide.Gui/SyncContextAttribute.cs:line 157
   at MonoDevelop.Ide.Gui.GuiSyncContext.Dispatch(MonoDevelop.Ide.StatefulMessageHandler cb, System.Object ob) in /build/src/monodevelop-2.8.6.5/src/core/MonoDevelop.Ide/MonoDevelop.Ide.Gui/GuiSyncContext.cs:line 39
   at MonoDevelop.Ide.Gui.SyncContextDispatchSink.SyncProcessMessage(IMessage msg) in /build/src/monodevelop-2.8.6.5/src/core/MonoDevelop.Ide/MonoDevelop.Ide.Gui/SyncContextAttribute.cs:line 125
   at System.Runtime.Remoting.ClientActivatedIdentity.SyncObjectProcessMessage(IMessage msg) in /build/src/mono-2.10.8/mcs/class/corlib/System.Runtime.Remoting/ServerIdentity.cs:line 191
   at System.Runtime.Remoting.Messaging.ServerContextTerminatorSink.SyncProcessMessage(IMessage msg) in /build/src/mono-2.10.8/mcs/class/corlib/System.Runtime.Remoting.Messaging/ServerContextTerminatorSink.cs:line 50
   at System.Runtime.Remoting.Contexts.CrossContextChannel.SyncProcessMessage(IMessage msg) in /build/src/mono-2.10.8/mcs/class/corlib/System.Runtime.Remoting.Contexts/CrossContextChannel.cs:line 57
   at System.Runtime.Remoting.Messaging.ClientContextTerminatorSink.SyncProcessMessage(IMessage msg) in /build/src/mono-2.10.8/mcs/class/corlib/System.Runtime.Remoting.Messaging/ClientContextTerminatorSink.cs:line 62
   at System.Runtime.Remoting.Messaging.EnvoyTerminatorSink.SyncProcessMessage(IMessage msg) in /build/src/mono-2.10.8/mcs/class/corlib/System.Runtime.Remoting.Messaging/EnvoyTerminatorSink.cs:line 44
   at System.Runtime.Remoting.Proxies.RemotingProxy.Invoke(IMessage request) in /build/src/mono-2.10.8/mcs/class/corlib/System.Runtime.Remoting.Proxies/RemotingProxy.cs:line 100
   at System.Runtime.Remoting.Proxies.RealProxy.PrivateInvoke(System.Runtime.Remoting.Proxies.RealProxy rp, IMessage msg, System.Exception ByRef exc, System.Object[] ByRef out_args) in /build/src/mono-2.10.8/mcs/class/corlib/System.Runtime.Remoting.Proxies/RealProxy.cs:line 191
   at System.Object.__icall_wrapper_mono_remoting_wrapper(IntPtr , IntPtr )
   at MonoDevelop.Ide.ProgressMonitoring.BaseProgressMonitor.BeginTask(System.String name, Int32 totalWork) in /build/src/monodevelop-2.8.6.5/src/core/MonoDevelop.Ide/MonoDevelop.Ide.ProgressMonitoring/BaseProgressMonitor.cs:line 89
   at System.Runtime.Remoting.RemotingServices.InternalExecute(System.Reflection.MethodBase , System.Object , System.Object[] , System.Object[] ByRef )
   at System.Runtime.Remoting.RemotingServices.InternalExecuteMessage(System.MarshalByRefObject target, IMethodCallMessage reqMsg) in /build/src/mono-2.10.8/mcs/class/corlib/System.Runtime.Remoting/RemotingServices.cs:line 138
   at System.Runtime.Remoting.Messaging.StackBuilderSink.SyncProcessMessage(IMessage msg) in /build/src/mono-2.10.8/mcs/class/corlib/System.Runtime.Remoting.Messaging/StackBuilderSink.cs:line 59
   at System.Runtime.Remoting.Messaging.ServerObjectTerminatorSink.SyncProcessMessage(IMessage msg) in /build/src/mono-2.10.8/mcs/class/corlib/System.Runtime.Remoting.Messaging/ServerObjectTerminatorSink.cs:line 53
   at System.Runtime.Remoting.Lifetime.LeaseSink.SyncProcessMessage(IMessage msg) in /build/src/mono-2.10.8/mcs/class/corlib/System.Runtime.Remoting.Lifetime/LeaseSink.cs:line 52
   at MonoDevelop.Ide.Gui.SyncContextDispatchSink.AsyncDispatchMessage(System.Object data) in /build/src/monodevelop-2.8.6.5/src/core/MonoDevelop.Ide/MonoDevelop.Ide.Gui/SyncContextAttribute.cs:line 180
   at MonoDevelop.Ide.StatefulMessageContainer.Run() in /build/src/monodevelop-2.8.6.5/src/core/MonoDevelop.Ide/MonoDevelop.Ide/DispatchService.cs:line 373
   at MonoDevelop.Ide.DispatchService.guiDispatcher() in /build/src/monodevelop-2.8.6.5/src/core/MonoDevelop.Ide/MonoDevelop.Ide/DispatchService.cs:line 259