OSX Jitter/QuickTime Crashes

Hello-
I keep getting irregular random crashes with almost literally the
same crash report every time. My patch is quite involved. Using a
complicated MXJ object and several video planes. Also communicating
via UDP to another patch with video planes as well. Crashes randomly
with or without the other patch. I am suspecting that the issue has
something to do with QuickTime. Does anyone have any clues? My
machine specs and the crash report are below. Let me know if you need
any more info-
thanks for any help-
MarkDavid

-----------specs----------------------------------

Hardware Overview:

Model Name:    MacBook Pro 15"
Model Identifier:    MacBookPro2,2
Processor Name:    Intel Core 2 Duo
Processor Speed:    2.33 GHz
Number Of Processors:    1
Total Number Of Cores:    2
L2 Cache (per processor):    4 MB
Memory:    2 GB
Bus Speed:    667 MHz
Boot ROM Version:    MBP22.00A5.B02
SMC Version:    1.12f5

-----------Crash Report----------------------------------
Date/Time: 2007-07-24 14:40:17.894 -0700
OS Version: 10.4.10 (Build 8R2218)
Report Version: 4

Command: MaxMSP
Path: /Applications/MaxMSP 4.6/MaxMSP.app/Contents/MacOS/MaxMSP
Parent: WindowServer [58]

Version: ??? (4.6.3)

PID: 304
Thread: 0

Exception: EXC_BAD_ACCESS (0x0001)
Codes: KERN_PROTECTION_FAILURE (0x0002) at 0x000000f4

Thread 0 Crashed:
0 com.apple.QuickTime     0x9431de4f callBackTask_priv + 509
1 com.apple.QuickTime     0x9432b386 SetTimeBaseCompValue +
365
2 com.apple.QuickTime     0x94345203 SetTimeBaseTime_priv +
173
3 com.apple.QuickTime     0x9438ca4a SetMovieTime_priv + 139
4 com.apple.QuickTime     0x943a4b68 SetMovieTimeValue_priv
+ 66
5 com.cycling74.JitterAPI     0x167b0fcb jit_qt_movie_looper + 200
6 com.apple.QuickTime     0x9431de46 callBackTask_priv + 500
7 com.apple.QuickTime     0x94366096 TaskMovie_priv + 3578
8 com.apple.QuickTime     0x94430830 frequentlyTaskMovies +
145
9 com.apple.HIToolbox     0x92e24a8a TimerVector + 31
10 com.apple.CoreFoundation     0x9082d7e2 CFRunLoopRunSpecific +
3341
11 com.apple.CoreFoundation     0x9082cace CFRunLoopRunInMode + 61
12 com.apple.HIToolbox     0x92dec8d8
RunCurrentEventLoopInMode + 285
13 com.apple.HIToolbox     0x92debfe2 ReceiveNextEventCommon
+ 385
14 com.apple.HIToolbox     0x92e34a74 _AcquireNextEvent + 58
15 com.apple.HIToolbox     0x92e348bc
RunApplicationEventLoop + 150
16 com.cycling74.MaxMSP46     0x00027854 app_run + 52 (main.c:
1519)
17 com.cycling74.MaxMSP46     0x00027afe main + 680 (main.c:416)
18 com.cycling74.MaxMSP46     0x00002ba2 _start + 216
19 com.cycling74.MaxMSP46     0x00002ac9 start + 41