How do you change the ''open with'' thing to unknown program? I accidentally changed it to adobe reader and can not get it back, now none of my add-ons work! Please help me?!
Turn on file extensions if you haven't already so you can tell wtf you're doing:
My Computer->Tools->Folder Options->View Tab->Uncheck "Hide file extensions for known file types"
If file association is wrong:
My Computer->Tools->Folder Options->File Types Tab->Find the file extension you want->Click the "Change" button