When I perform a file search (WinXP SP3) and want to see what folder the file is in, I'd right-click it (from the Search Results window) to open the context menu and choose Open Containing Folder. Instead, the Open With window pops up asking you to choose a program when normally it should've been the folder itself. Trying this suggestd fix (from another site) failed to resolve the problem:
Click Start, Run and type Regedit.exe
Navigate to the following branch
In the right-pane, double-click the (default) entry
Type the word none and press Enter
Any ideas what's causing this? This problem surfaced when I changed a default XP theme with a third party file, although I'm really not 100% sure this is the culprit. Also, Malwarebytes and a boot-time scan with avast showed nothing suspect.
Any suggested solutions would be greatly appreciated.