[Mono-winforms-list] X11 error: Bad Cursor when creating new Mono window

[bdavis]

Hi all,

I'm working on porting a .NET app to Mono, and am running into problems in a
portion of the program that is supposed to pop open a new window.  I have a
toolbar with buttons, and clicking this one particular button is supposed to
open a child window.  Doing so results in the following error:
 
 X11 Error encountered:
    Error: BadCursor (invalid Cursor parameter)
    Request:    2 (0)
    Resource ID: 0x7043D660
    Serial:     5286
    Hwnd:         < null >
    Control:      < null >   at System.Environment.get_StackTrace() in
/usr/src/packages/BUILD/mono-2.6.4/mcs/class/corlib/SystemEnvironment.cs:
line 202
at System.Windows.Forms.XplatUIX11.HandleError(IntPtr display, XErrorEvent
ByRef error_event) 
(((huge stacktrace snipped)))

Trying to insert a breakpoint in my event handler does no good, doing that
locks up XWindows  and I have to switch to another tty to kill the offending
process.  I am completely lost, can anyone help?  

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