I'm running CS3 under Vista Home Premium. Has worked fine.
Downloaded ACR ver 4.1 and dropped it into the "File Formats" folder, having removed the old ver 4.0 first.
I shoot Nikon Raw (.nef).
Started Bridge. No thumbnails. Read the instructions on blowing out the thumbnail cache. Think I've done that correctly.
Problem not resolved. When I double-click on one of the .nef files, a message appears saying "Not the right kind of document."
Have I done something incorrectly?
Should I uninstall CS3, reinstall, and try to put ACR 4.1 in again?