Lost my Firefox Theme and Extension associations

Hi guys, can anyone help me? I upgraded to Windows XP recently and, in Firefox, I lost the capability to just click on an extension or theme file to automatically install them. I’ve tried uninstalling and reinstalling Firefox but to no avail. Any ideas?

My first move would be (from any folder window) tools->folder options->file types.

There may be an association there preventing Firefox from working.

Seems like a long shot but it’s worth a try.

if you’re talking about installing them from within windows: right click, open with, choose program, select “always”, browse to firefox.exe.

if you’re talking about installing them by clicking links to XPIs, i got no clue… it only works for whitelisted sites anyways, normally i wind up saving them to desktop then following the above instructions.