[Mono-osx] crashing when attempting to drag and drop from a table

[Tim Nichols]

Hi -

I have a table view in a pane of a NSSplitView, and drag N drop works great from the table to another view.

However, if I resize the window a few times and attempt to drag N drop again, mono crashes with the following stack.   Anyone seen something like this?   Any ideas what could be happening?

2012-02-20 22:31:12.051 MyApp[27157:90b] -[NSTrackingArea tableView:writeRowsWithIndexes:toPasteboard:]: unrecognized selector sent to instance 0x4516110
2012-02-20 22:31:12.053 MyApp[27157:90b] -[NSTrackingArea tableView:writeRowsWithIndexes:toPasteboard:]: unrecognized selector sent to instance 0x4516110
2012-02-20 22:31:12.057 MyApp[27157:90b] (
	0   CoreFoundation                      0x98a89b67 __raiseError + 231
	1   libobjc.A.dylib                     0x912c8149 objc_exception_throw + 155
	2   CoreFoundation                      0x98a8d170 -[NSObject doesNotRecognizeSelector:] + 256
	3   CoreFoundation                      0x989dbda9 ___forwarding___ + 457
	4   CoreFoundation                      0x989dbb72 _CF_forwarding_prep_0 + 50
	5   AppKit                              0x02f34a10 -[NSTableView _sendDataSourceWriteDragDataWithIndexes:toPasteboard:] + 100
	6   AppKit                              0x02f3527d -[NSTableView _performClassicDragOfIndexes:hitRow:event:] + 196
	7   AppKit                              0x02a7a597 -[NSTableView _performDragFromMouseDown:] + 591
	8   AppKit                              0x02a78c9d -[NSTableView mouseDown:] + 757
	9   AppKit                              0x029dbca5 -[NSWindow sendEvent:] + 7533
	10  AppKit                              0x029740e7 -[NSApplication sendEvent:] + 4788
	11  AppKit                              0x029056d5 -[NSApplication run] + 1007
	12  AppKit                              0x02b99261 NSApplicationMain + 1054
	13  ???                                 0x04482fbe 0x0 + 71839678
	14  ???                                 0x04482dbc 0x0 + 71839164
	15  ???                                 0x0143bff8 0x0 + 21217272
	16  ???                                 0x0143c156 0x0 + 21217622
	17  MyApp                       0x0000d282 mono_jit_runtime_invoke + 722
	18  MyApp                       0x001a436a mono_runtime_invoke + 170
	19  MyApp                       0x001a6f01 mono_runtime_exec_main + 705
	20  MyApp                       0x001a6111 mono_runtime_run_main + 929
	21  MyApp                       0x00069995 mono_jit_exec + 149
	22  MyApp                       0x0006bf13 mono_main + 9587
	23  MyApp                       0x00002299 main + 441
	24  MyApp                       0x000020a6 start + 54
	25  ???                                 0x00000001 0x0 + 1
)

and sometimes this is followed with

=================================================================
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.
=================================================================

Thanks.

- Tim