The key, to which Chris alluded, is that you copied plug-ins from an earlier version of Photoshop - or you set the Extra plug-ins folder location preference to point to such plug-ins, probably to try to shortcut the process of getting the same set of 3rd party plug-ins installed that you had installed before.
You can't do it that way, because you also likely carried along the plug-ins that were provided by Adobe with Photoshop.
You have to undo that - ALL of that - and return your plug-ins back to just the set provided with the current version of Photoshop. Then you have to install just your 3rd party plug-ins.
I'm curious - what gave you the idea that you could just try to port your plug-ins from the older Photoshop wholesale like that?
-Noel
