Flash Closes to Desktop on File Publish (CTD)

Ok, I have seen several of these posts but no one ever gives a straight clear answer to why or how to correct the problem. Here is my situation:

If i create a new FLA file on my Mac and publish it works fine. However, if i use a .fla file that was created on a PC and try to publish then Flash CTD's on me. (Crashes To Desktop)

Steps i have unsuccessfully taken:

1) Completely Un-install and Re-install CS3:scared:
2) Clean Out My Preferences:xbones:
3) Verify Preferences:crazy:
4) Repair Preferences:scared:

To no avail have i been successful. Any help is welcome with open arms.
TIA

Ok People... After a lot of endless searching on the internet i have found my problem.

Whever I opened the FLA file it asked me if i wanted to choose a substitute font. and i chose no. It Crashed. Then i chose yes and instead of using the System default which was HelveticaNeu - cd i Used myriad pro.

After i made this change i was able to preview my FLA without it crashing. This might not help all of you but hopefull it will help some of you.

Godspeed.

it sounds like one of your fonts is corrupt, look up Linotype Fontexplorer (it's free) and try that to verify your fonts.
Replace or uninstall any that come up bad.