My Computer No Longer Shows Thumbnails

Glad you got your thumbnails back (the computer ones, that is).

For future reference (because I've encountered these problems before)
-- if only your Adobe thumbnails disappear, this is a Windows bug introduced in one of their updates that they do not plan on correcting because they don't consider it a bug; the workaround is no longer necessary, you only have to make sure you get the most recent Adobe update

-- if all thumbnails are gone, but only for some folders, you either need to change the local folder option for that folder, or change the local folder option setting for the assigned folder type (warning, this will also change the default folder appearance settings for all folders of that type)

-- if thumbnails are disappearing after you make any changes to a folder, or if the folder doesn't remember any appearance/positioning changes that you made, and nothing you do solves the problem, you probably have exceeded your shellbag limit; if so, PM me for instructions