Hollywood Dazzle and Firewire Hub killed FCP

I made the mistake of running DV devices through a FW hub into the same port on my PowerPC G5 and now FCP 5 won't open at all.

I've unplugged everything and reinstalled FCP to no avail.

How can I fix my problem?

System Profiler says my FW ports are still active and DVD studio pro and other associated applications still work.

please help!