Quicktime quits when opening any m4v file

Question

found simular problems, none of the solutions worked.
any ideas?
qt 10.2
os 10.8.4
  Model Name:          Mac Pro
  Model Identifier:          MacPro5,1
  Processor Name:          Quad-Core Intel Xeon
  Processor Speed:          2.4 GHz
  Number of Processors:          2
  Total Number of Cores:          8
  L2 Cache (per Core):          256 KB
  L3 Cache (per Processor):          12 MB
  Memory:          18 GB
Process:         QuickTime Player [1430]
Path:            /Applications/QuickTime Player.app/Contents/MacOS/QuickTime Player
Identifier:      com.apple.QuickTimePlayerX
Version:         10.2 (603.17)
Build Info:      QuickTimePlayerX-603017000000000~5
Code Type:       X86-64 (Native)
Parent Process:  launchd [150]
User ID:         501
Date/Time:       2013-08-22 20:12:07.543 -0700
OS Version:      Mac OS X 10.8.4 (12E55)
Report Version:  10
Interval Since Last Report:          62106 sec
Per-App Interval Since Last Report:  2913 sec
Per-App Crashes Since Last Report:   12
Anonymous UUID:                      4B433519-3610-6EE1-E9C0-B48A7C11C516
Crashed Thread:  0  Dispatch queue: com.apple.main-thread
Exception Type:  EXC_BAD_ACCESS (SIGSEGV)
Exception Codes: KERN_INVALID_ADDRESS at 0x0000000000000000
VM Regions Near 0:
-->
    __TEXT                 0000000106c8d000-0000000106eea000 [ 2420K] r-x/rwx SM=COW  /Applications/QuickTime Player.app/Contents/MacOS/QuickTime Player
Thread 0 Crashed:: Dispatch queue: com.apple.main-thread
0   com.apple.CoreFoundation                0x00007fff8caefbb2 CFDictionaryGetValue + 18
1   com.apple.QTKit                         0x00007fff932a

Answer 1

The files I'm most concerned with playing are my animations exported from Final Cut and from another system's quicktime. These usually are quicktimes or .wma's that are either uncompressed or with a variety of compression, usually DV-NTSC, H.264, HDV 1080 60i, or mpeg4 for the web. But as I've professed before, it seem that the file type isn't necessarily factor. Any video file that should play in Quicktime does not and the program crashes. Upon this I get a very vague error message which reads "Quicktime Player has encountered a problem and needs to close. We are sorry for the inconvenience." That unfortunately is as much detail as I can give at the moment. I know this is a vague problem and that my information is just as vague, but that is all I have gathered. Anything is appreciated.