Adobe QT Server Crashing?

Question

I've got a problem that I can't make changes to some clips on a sequence.  When ever I double click on them to load them in to the viewer and see the effects applied I get the wait cursor and Adobe QT Server goes to exactly 100% cpu usage, which to me implies a hung app in a continuous loop.   It never comes back.
Mac Pro - 8 Core - 10.6.6, CS5 5.0.3.
Any ideas what could cause this and how to go about resolving it ?

Answer 1

One reason that QuickTime can fail to initialize fully because it gets  stuck loading a badly written importer component. If you have any AVI  importers/codecs on your Mac, this could be the issue. Here's a message  that goes into some detail about that: http://forums.adobe.com/message/2808379#2808379
Another common reason is quite different: The TCP  communication with the QuickTime server is blocked. The fix for this to remove the  blockage in communication. Sometimes the blockage is because of an  aggressive firewall program, which sees the TCP communication and stops  it. If this is the case, then you can either turn the firewall software  off or specifically allow the QT32 Server component to communicate;  instructions for letting a specific process communicate are different  for each firewall program, so you'll have to look in the documentation  for your security software for information about doing that. Here's a  document with some more information about this general issue, though it  refers to a more serious failure when the blockage happens at a  different step in the startup process: http://kb2.adobe.com/cps/857/cpsid_85711.html