Photoshop not opening NEF files

[SteveH]

Just had to upgrade from Win XP to Win 7 64 bit. Reinstalled Photoshop CS5 and now it wont open my Nikon RAW (.NEF) files. Bridge isn't showing the thumbnail images either. The RAW plug-in is version 6.6.0.261. How can I fix this.

TIA

Steve

[Steve]

Is there an error message?
Does PS open other files OK?

It sounds like you have the most current version of ACR, is everything else up to date?
Go to Help|Updates and make sure.

If that doesn't help try resetting your preferences file.
It cures a lot of strange behavior in PS.

Start Photoshop and immediately hold down Ctrl+Alt+Shift (Windows)
or Command+Option+Shift (Mac OS X).

Then, click Yes to the message, "Delete the Adobe Photoshop Settings file?"