FCP 6 won't launch

Question

I had FCP 5.0.1 and one day and all of the sudden, it wouldn't launch anymore. I troubleshooted some, threw away preferences and all those other files people speak of and nothing..
I thought I would fix the situation by finally uninstalling the entire studio and REinstalling FCP 6.0.
When launching Final Cut Pro I can't seem to get past "Loading Audio Filters RP150". It unexpectedly quits every time.. I have thrown out all the files people have said to throw out. I have repaired my disk permissions, etc. Still the same thing.
What else can I do?

Answer 1

does anyone have Disk Warrior?
Yes. But it's not going to fix this issue. DW does one thing only -it checks and repairs the directory structure of hard drives.
Where does this audio plug in come from -do you have Logic or another audio software package installed? As Studio X already mentioned, +"If these filters are incompatible, FCP won't launch and won't give you much in the way of an error message."+
Final Cut Pro plugins are located at: hard drive name/Library/Application Support/Final Cut Pro System Support/Plugins. Look for the plugin there and move it out of the Plugins folder. Note that it might be in a sub-folder, typically named after the manufacturer.
If the plug in is an AudioUnit, you might be able to use [Audio Unit Manager|http://audio-unit-manager.en.softonic.com/mac] (free) to tell FCP not to load it.