One more detail...
The only thing I've done differently is installed Safari 4 (beta). I just can't remember if this was before or after the none launch episodes. Hope this helps.
Have you tried diabling your network connections (disconnect completely from the internet) and then trying to launch FC? After FC was running you can then reconnect to the internet. Not a fix but a workaround that worked for me. Best of luck.
I have the same problem under Windows Vista. I disconnect Internet and try to lounch Catalyst without result, always send "error: 6" and suggest to visit adobe.com/support, but here there is not support for Catalyst!!!
Any other idea?
That did it for me!!! Thanks.