What programme does the .gadget extension need to be associated with to get it to add to the Windows Sidebar
I've managed to accidently associate .gadget with WinRar by doing an open with to work out why one of mine wasn't installing correctly, and now can't find how to reset it. Associating it with sidebar.exe doesn't work, and Windows' automated jobbie doesn't know what a .gadget is.

File Association
xird
In regedit32 find the key,
HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Explorer\FileExts\.gadget\OpenWithList
Delete everything under OpenWithList,
and the whole of UserChoice including the UserChoice key itself.
and it works again :)
mishazh
if it makes any different this is on RC1
Namza
Ironically, if you look it up on the web it reports " Windows does not recognize this file type."