Courtesy of MVP Sandi Hardmeier:
Some software (for example CCleaner) deletes uninstaller directories such as
$NtUninstallie7bet2pmx$. If the $NtUninstallie7bet2pmx$ folder is empty, or
has been deleted completely, whether by third party software or manually to
preserve disk space, you will *not* be able to remove the Beta 2 Preview via
Add/Remove Programs or the commandline. If running System Restore does not
resolve the situation for you, then your only choice is to stay with the
Preview, or format your PC and install Windows anew. You will not be able
to install any future builds of IE7 while Beta 2 Preview is installed, nor
will you be able to run a Repair Install of XP.
Beta testers of IE7 Public Preview are asked to post their comments to
microsoft.public.internetexplorer.general newsgroup.
On the web:
http://www.microsoft.com/communitie...?dg=microsoft.public.internetexplorer.general
In your newsreader:
news://msnews.microsoft.com/microsoft.public.internetexplorer.general