A few things to try…
Error-600 means:
procNotFound
No eligible process with specified process serial number.
So, in the in the preferences folder there are preferences that FCP reads to run…if these get corrupted, well…. they cant run. Try trashing FCP preferences and see if that solves the issue. FCP will create new fresh ones to replace them.
From the web site of Larry Jordan:
Preference files get corrupted during normal operations, a crash, force quit, or other natural disaster. There are five rules for trashing preferences:
Only trash preference files when Final Cut Pro is NOT working properly. This is not a maintenance procedure – this ia a repair procedure.
Always quit Final Cut before trashing preferences. It must not be running.
Trash all preference files as a group, they are linked together, don’t trash just one or two
Only trash files, never trash folders
After trashing preference files, always empty the trash.
When preference files get hosed, Final Cut loses a great deal of its stability. To regain it’s equilibrium, do the following:
FCP 7.0x
Go to your Home directory then inside it to: Library > Preferences
Drag com.apple.FinalCutPro.plist to the trash
Scroll down to the Final Cut Pro User Data folder
Drag Final Cut Pro 7.0 Prefs to the trash
Drag Final Cut Pro Obj Cache to the trash
Drag Final Cut Pro Prof Cache to the trash
Empty the trash
Also…Have you tried trans-coding the HDV stuff to ProRes? This would be the proper thing to do especially on such a large project…
Richard Cooper
FrostLine Productions, LLC
Anchorage, Alaska
http://www.frostlineproductions.com