Insight 6.4 crashes when opening the register window on Mac OS X

[Hermann-Simon Lichte <hermann dot lichte at gmail dot com>]

Hello,

whenever I try to open the register window on Mac OS X, Insight  
crashes on me:

Program received signal EXC_BAD_ACCESS, Could not access memory.
Reason: KERN_PROTECTION_FAILURE at address: 0x01132d28
0x8e4bc818 in _XSetClipRectangles ()
(gdb) bt
#0  0x8e4bc818 in _XSetClipRectangles ()
#1  0x8e4bca08 in XSetClipRectangles ()
#2  0x002ec5b8 in TableDisplay (clientdata=0x62ea008) at ../../../ 
insight-6.4/libgui/src/tkTable.c:2152
#3  0x9a2c8b34 in TclServiceIdle ()
#4  0x9a2b81b0 in Tcl_DoOneEvent ()
#5  0x9a3342a8 in Tk_MainLoop ()
#6  0x000024cc in captured_command_loop (data=0x137e008) at ../../ 
insight-6.4/gdb/main.c:101
#7  0x0009d4ac in catch_errors (func=0x24b0 <captured_command_loop>,  
func_args=0x0, errstring=0x3159c0 "", mask=0) at ../../insight-6.4/ 
gdb/exceptions.c:515
#8  0x00003498 in captured_main (data=0x0) at ../../insight-6.4/gdb/ 
main.c:829
#9  0x0009d4ac in catch_errors (func=0x2514 <captured_main>,  
func_args=0xbffff4d8, errstring=0x3159c0 "", mask=0) at ../../ 
insight-6.4/gdb/exceptions.c:515
#10 0x000034fc in gdb_main (args=0x6487488) at ../../insight-6.4/gdb/ 
main.c:838
#11 0x0000249c in main (argc=20439048, argv=0x6487488) at ../../ 
insight-6.4/gdb/gdbtk/generic/gdbtk-main.c:36

The other windows seem to work fine (i.e., memory dump, stack,  
locals, breakpoints). I also noticed that whenever another window is  
opened from withing Insight, two windows appear. One is the actual  
window and the other is a small one just containing Insight's icon.  
This applies to any window.

So what can I do? I would like to help in getting the Mac port  
stable. Maybe I can provide patches for it. I am willing to spend  
some time in repairing these glitches because I really love Insight.

Cheers,
Hermann