Photoshop CS won't use Camera RAW plug-in after installing Nikon PictureProject

[Sebastian]

I forgot to mention that I tried that. Even after uninstalling both and re-installing CS, the same error occurs, though I can at that point use the Adobe RAW filter. Yours is a good suggestion in any case. I guess I may have to learn to live with the error message until my next OS rebuild. Thanks!

Hit ctrl-alt-shift right after PS starts loading and answer yes when it asks if you want to trash the preferences file.

[awkwards]

Just tried this, but still no go.
Thanks again.