Upgraded to 6.05 and now Knoll Light Factory 2.5 not working

I upgraded my OSX from 10.4 to 10.5 and FCP6.0.3 would not work anymore, so I checked for updates and know have 6.0.5 and it now works.

Except, it can not find Knoll light factory 2.5 anymore (important as using it in a current edit) When FCP loads the timeline and states it can not find Knoll Light Factory and askes me if I want to navigate to it. When I say yes and navigate to where it is installed in:

Macintosh HD:Library:Application Support:Adobe:Common:Plug-ins:CS3:MediaCore:Knoll Light Factory 2.5:

It just crashes!

So how do I re-install Knoll light factory back into FCP 6.0.5 Effects Pannel and why dose it keep crashing?

Thx

Kevin