[Mono-bugs] [Bug 433730] New: Debugger and Debug Application doesn't start.

[bugzilla_noreply at novell.com]

https://bugzilla.novell.com/show_bug.cgi?id=433730


           Summary: Debugger and Debug Application doesn't start.
           Product: MonoDevelop
           Version: SVN
          Platform: i386
        OS/Version: Ubuntu
            Status: NEW
          Severity: Normal
          Priority: P5 - None
         Component: debugger
        AssignedTo: mono-bugs at lists.ximian.com
        ReportedBy: lnc19 at hotmail.com
         QAContact: mono-bugs at lists.ximian.com
          Found By: ---


I get the next error trying to start the debugger:

ERROR [2008-10-08 22:01:40Z]: An exception was thrown while dispatching a
method call in the UI thread. System.NullReferenceException: Object reference
not set to an instance of an object
  at MonoDevelop.Components.Docking.DockGroup.IsSelectedPage
(MonoDevelop.Components.Docking.DockItem it) [0x00000] in
/home/luciano/mono_svn/monodevelop_svn/monodevelop/main/src/core/MonoDevelop.Dock/DockGroup.cs:659 
  at MonoDevelop.Components.Docking.DockContainer.LoadLayout
(MonoDevelop.Components.Docking.DockLayout dl) [0x0003a] in
/home/luciano/mono_svn/monodevelop_svn/monodevelop/main/src/core/MonoDevelop.Dock/DockContainer.cs:97 
  at MonoDevelop.Components.Docking.DockFrame.LoadLayout (System.String
layoutName) [0x00015] in
/home/luciano/mono_svn/monodevelop_svn/monodevelop/main/src/core/MonoDevelop.Dock/DockFrame.cs:175 
  at MonoDevelop.Components.Docking.DockFrame.set_CurrentLayout (System.String
value) [0x00012] in
/home/luciano/mono_svn/monodevelop_svn/monodevelop/main/src/core/MonoDevelop.Dock/DockFrame.cs:209 
  at MonoDevelop.Ide.Gui.SdiWorkbenchLayout.set_CurrentLayout (System.String
value) [0x0005e] in
/home/luciano/mono_svn/monodevelop_svn/monodevelop/main/src/core/MonoDevelop.Ide/MonoDevelop.Ide.Gui/SdiWorkspaceLayout.cs:325 
  at MonoDevelop.Ide.Gui.Workbench.set_CurrentLayout (System.String value)
[0x0001b] in
/home/luciano/mono_svn/monodevelop_svn/monodevelop/main/src/core/MonoDevelop.Ide/MonoDevelop.Ide.Gui/Workbench.cs:192 
  at MonoDevelop.Ide.Gui.ProjectOperations.Debug (IBuildTarget entry) [0x0003f]
in
/home/luciano/mono_svn/monodevelop_svn/monodevelop/main/src/core/MonoDevelop.Ide/MonoDevelop.Ide.Gui/ProjectOperations.cs:665 
  at MonoDevelop.Ide.Commands.DebugHandler.ExecuteCombine (IAsyncOperation op)
[0x0000b] in
/home/luciano/mono_svn/monodevelop_svn/monodevelop/main/src/core/MonoDevelop.Ide/MonoDevelop.Ide.Commands/ProjectCommands.cs:193 
  at (wrapper delegate-invoke)
System.MulticastDelegate:invoke_void__this___IAsyncOperation
(MonoDevelop.Core.IAsyncOperation)
  at MonoDevelop.Core.ProgressMonitoring.NullProgressMonitor.OnCompleted ()
[0x0000b] in
/home/luciano/mono_svn/monodevelop_svn/monodevelop/main/src/core/MonoDevelop.Core/MonoDevelop.Core.ProgressMonitoring/NullProgressMonitor.cs:212 
  at MonoDevelop.Ide.Gui.OutputProgressMonitor.OnCompleted () [0x000ef] in
/home/luciano/mono_svn/monodevelop_svn/monodevelop/main/src/core/MonoDevelop.Ide/MonoDevelop.Ide.Gui/OutputProgressMonitor.cs:94 
  at MonoDevelop.Core.ProgressMonitoring.NullProgressMonitor.Dispose ()
[0x00042] in
/home/luciano/mono_svn/monodevelop_svn/monodevelop/main/src/core/MonoDevelop.Core/MonoDevelop.Core.ProgressMonitoring/NullProgressMonitor.cs:135 
  at MonoDevelop.Core.ProgressMonitoring.AggregatedProgressMonitor.Dispose ()
[0x00027] in
/home/luciano/mono_svn/monodevelop_svn/monodevelop/main/src/core/MonoDevelop.Core/MonoDevelop.Core.ProgressMonitoring/AggregatedProgressMonitor.cs:156 
  at MonoDevelop.Ide.Gui.ProjectOperations.BuildDone (IProgressMonitor monitor,
MonoDevelop.Projects.BuildResult result, IBuildTarget entry) [0x0018e] in
/home/luciano/mono_svn/monodevelop_svn/monodevelop/main/src/core/MonoDevelop.Ide/MonoDevelop.Ide.Gui/ProjectOperations.cs:887 
  at
MonoDevelop.Ide.Gui.ProjectOperations+<BuildSolutionItemAsync>c__AnonStorey58.<>m__72
() [0x00000] in
/home/luciano/mono_svn/monodevelop_svn/monodevelop/main/src/core/MonoDevelop.Ide/MonoDevelop.Ide.Gui/ProjectOperations.cs:815 
  at MonoDevelop.Core.Gui.GenericMessageContainer.Run () [0x00000] in
/home/luciano/mono_svn/monodevelop_svn/monodevelop/main/src/core/MonoDevelop.Core.Gui/MonoDevelop.Core.Gui/DispatchService.cs:269 
Caller stack:   at System.Environment.get_StackTrace() in
/home/luciano/mono_opt20/mono-2.0/mcs/class/corlib/System/Environment.cs:line
206
   at
MonoDevelop.Core.Gui.GenericMessageContainer..ctor(MonoDevelop.Core.Gui.MessageHandler
cb, Boolean isSynchronous) in
/home/luciano/mono_svn/monodevelop_svn/monodevelop/main/src/core/MonoDevelop.Core.Gui/MonoDevelop.Core.Gui/DispatchService.cs:line
263
   at
MonoDevelop.Core.Gui.DispatchService.GuiDispatch(MonoDevelop.Core.Gui.MessageHandler
cb) in
/home/luciano/mono_svn/monodevelop_svn/monodevelop/main/src/core/MonoDevelop.Core.Gui/MonoDevelop.Core.Gui/DispatchService.cs:line
68
   at MonoDevelop.Ide.Gui.ProjectOperations.BuildSolutionItemAsync(IBuildTarget
entry, IProgressMonitor monitor) in
/home/luciano/mono_svn/monodevelop_svn/monodevelop/main/src/core/MonoDevelop.Ide/MonoDevelop.Ide.Gui/ProjectOperations.cs:line
813
   at
MonoDevelop.Ide.Gui.ProjectOperations+<Build>c__AnonStorey57.<>m__70(System.Object
) in
/home/luciano/mono_svn/monodevelop_svn/monodevelop/main/src/core/MonoDevelop.Ide/MonoDevelop.Ide.Gui/ProjectOperations.cs:line
793
   at MonoDevelop.Core.Gui.StatefulMessageContainer.Run() in
/home/luciano/mono_svn/monodevelop_svn/monodevelop/main/src/core/MonoDevelop.Core.Gui/MonoDevelop.Core.Gui/DispatchService.cs:line
308


When i'm trying to start "Debug Application" after selecting the file, i'm
getting:

System.NullReferenceException: Object reference not set to an instance of an
object
  at MonoDevelop.Components.Docking.DockGroup.IsSelectedPage
(MonoDevelop.Components.Docking.DockItem it) [0x00000] in
/home/luciano/mono_svn/monodevelop_svn/monodevelop/main/src/core/MonoDevelop.Dock/DockGroup.cs:659 
  at MonoDevelop.Components.Docking.DockContainer.LoadLayout
(MonoDevelop.Components.Docking.DockLayout dl) [0x0003a] in
/home/luciano/mono_svn/monodevelop_svn/monodevelop/main/src/core/MonoDevelop.Dock/DockContainer.cs:97 
  at MonoDevelop.Components.Docking.DockFrame.LoadLayout (System.String
layoutName) [0x00015] in
/home/luciano/mono_svn/monodevelop_svn/monodevelop/main/src/core/MonoDevelop.Dock/DockFrame.cs:175 
  at MonoDevelop.Components.Docking.DockFrame.set_CurrentLayout (System.String
value) [0x00012] in
/home/luciano/mono_svn/monodevelop_svn/monodevelop/main/src/core/MonoDevelop.Dock/DockFrame.cs:209 
  at MonoDevelop.Ide.Gui.SdiWorkbenchLayout.set_CurrentLayout (System.String
value) [0x0005e] in
/home/luciano/mono_svn/monodevelop_svn/monodevelop/main/src/core/MonoDevelop.Ide/MonoDevelop.Ide.Gui/SdiWorkspaceLayout.cs:325 
  at MonoDevelop.Ide.Gui.Workbench.set_CurrentLayout (System.String value)
[0x0001b] in
/home/luciano/mono_svn/monodevelop_svn/monodevelop/main/src/core/MonoDevelop.Ide/MonoDevelop.Ide.Gui/Workbench.cs:192 
  at MonoDevelop.Ide.Gui.ProjectOperations.DebugApplication (System.String
executableFile) [0x00038] in
/home/luciano/mono_svn/monodevelop_svn/monodevelop/main/src/core/MonoDevelop.Ide/MonoDevelop.Ide.Gui/ProjectOperations.cs:705 
  at MonoDevelop.Ide.Commands.DebugApplicationHandler.Run () [0x0002c] in
/home/luciano/mono_svn/monodevelop_svn/monodevelop/main/src/core/MonoDevelop.Ide/MonoDevelop.Ide.Commands/DebugCommands.cs:73 
  at MonoDevelop.Components.Commands.CommandHandler.Run (System.Object
dataItem) [0x00000] in
/home/luciano/mono_svn/monodevelop_svn/monodevelop/main/src/core/MonoDevelop.Components/MonoDevelop.Components.Commands/CommandHandler.cs:41 
  at MonoDevelop.Components.Commands.ActionCommand.DispatchCommand
(System.Object dataItem) [0x0002e] in
/home/luciano/mono_svn/monodevelop_svn/monodevelop/main/src/core/MonoDevelop.Components/MonoDevelop.Components.Commands/ActionCommand.cs:85 
  at MonoDevelop.Components.Commands.CommandManager.DispatchCommand
(System.Object commandId, System.Object dataItem, System.Object initialTarget)
[0x00275] in
/home/luciano/mono_svn/monodevelop_svn/monodevelop/main/src/core/MonoDevelop.Components/MonoDevelop.Components.Commands/CommandManager.cs:533


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