[socal-piggies] terminate called without an active exception on 1 iMac but not another

[tangle1 at mindspring.com]

Hello,

I'm developing an iMac python script; actually its Maya wrapper around python. It crashes with "Abort trap" on one iMac but ends without crash on another iMac. In both cases, program finishes operations and prints final "... Exiting normally" message that my script issues. 

Any ideas as to what's causing this ? Thanks for any suggestions !!!
I'm writing this from home and I'm planning to test more on Monday. 

Here's snippet of ending statements and also the console output from both bad and good endings. The script has been working for couple of weeks and this crash behavior just popped up. 

---------------------------------------    
    if (trimqa(cid,cgl)):
        print "trimqa   %s Exiting normally" % sys.argv[0]
        cmds.quit(force=True)
        sys.exit(0)
    else:
        print "trimqa   %s Exiting with errors" % sys.argv[1]
        cmds.quit(force=True)
        sys.exit(1)

-----------------------------------------------------------
bad ending: (but saved maya scene is good)
-------------------------------------------------
trimqa   Saving qa scene /xserve4/cg_production/05_trim-qa/renderScenes/QA_turntable_CID00344_CGL00280.mb for render
trimqa   /xserve4/cg_production/00_resources/production_scripts/trimqa.py Exiting normally
pure virtual method called
terminate called without an active exception
Abort trap
--------------------------------------------
good ending:
--------------------------------------
trimqa   Saving qa scene /xserve4/cg_production/05_trim-qa/renderScenes/QA_turntable_CID00005_CGL00216.mb for render
trimqa   /xserve4/cg_production/00_resources/production_scripts/trimqa.py Exiting normally
CGI-13:~ CGI-13$ 
---------------------------------

Apple log details
-------------------------------------
Process:         Python [18444]
Path:            /Applications/Autodesk/maya2011/Maya.app/Contents/Frameworks/Python.framework/Versions/2.6/Resources/Python.app/Contents/MacOS/Python
Identifier:      Python
Version:         ??? (???)
Code Type:       X86-64 (Native)
Parent Process:  bash [18361]

Date/Time:       2011-05-20 16:32:54.103 -0700
OS Version:      Mac OS X 10.6.7 (10J869)
Report Version:  6

Interval Since Last Report:          1746326 sec
Crashes Since Last Report:           12
Per-App Crashes Since Last Report:   8
Anonymous UUID:                      A702737D-9D3D-473D-B58F-D3ED3608B55A

Exception Type:  EXC_CRASH (SIGABRT)
Exception Codes: 0x0000000000000000, 0x0000000000000000
Crashed Thread:  5

Application Specific Information:
abort() called

Thread 0:  Dispatch queue: com.apple.main-thread
0   libSystem.B.dylib             	0x00007fff81d7bf8a __semwait_signal + 10
1   libSystem.B.dylib             	0x00007fff81d7be19 nanosleep + 148
2   libSystem.B.dylib             	0x00007fff81d7bd83 usleep + 57
3   libvray.dylib                 	0x0000000122e47eae TNet::Done() + 334
4   libvray.dylib                 	0x0000000122cdac58 FloatingClient::~FloatingClient() + 104
5   libSystem.B.dylib             	0x00007fff81d53894 __cxa_finalize + 203
6   libSystem.B.dylib             	0x00007fff81d537ac exit + 18
7   org.python.python             	0x00000001000e678d handle_system_exit + 253
8   org.python.python             	0x00000001000e69d5 PyErr_PrintEx + 485
9   org.python.python             	0x00000001000e6f37 PyRun_SimpleFileExFlags + 279
10  org.python.python             	0x00000001000f729e Py_Main + 2766
11  org.python.python             	0x0000000100000f54 0x100000000 + 3924

Thread 1:  Dispatch queue: com.apple.libdispatch-manager
0   libSystem.B.dylib             	0x00007fff81d5a12a kevent + 10
1   libSystem.B.dylib             	0x00007fff81d5bffd _dispatch_mgr_invoke + 154
2   libSystem.B.dylib             	0x00007fff81d5bcd4 _dispatch_queue_invoke + 185
3   libSystem.B.dylib             	0x00007fff81d5b7fe _dispatch_worker_thread2 + 252
4   libSystem.B.dylib             	0x00007fff81d5b128 _pthread_wqthread + 353
5   libSystem.B.dylib             	0x00007fff81d5afc5 start_wqthread + 13

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