1) Uninstall AnyDVD using the add/remove program feature
2) Clean your registry of any possible errors by using a free app called Ccleaner, you can get it here;
http://www.ccleaner.com/download/builds.aspx
CCleaner (Crap Cleaner) removes unused and temporary files from your system, including cleaning the registry.
Installation Warning - The latest Standard version of CCleaner bundles the useless Yahoo Toolbar. Do not install this! Get the Basic or Slim versions instead. If you accidentally do install the Yahoo Toolbar, simply use add/remove in the windows control panel to remove it immediately.
Prefetch Cleaning Warning - The Advanced section has a performance slowing cleaning option "Old Prefetch data", never select this option for cleaning as it will increase application and Windows load times. Cleaning the Prefetch folder is a Myth and actually hurts performance. Windows already automatically cleans this folder at 128 entries. Anyone who claims this should be cleaned for ANY reason does not understand how Windows Prefetching works. - Source
Instructions - Download the Basic or Slim versions and install. Go to the "Windows" tab, then select "Run Cleaner". Finally select the "Issues" button and select "Scan for Issues" when it finishes scanning select "Fix Selected Issues", then "Fix All Selected Issues".
Notes - The Issues button is a registry cleaner and does not need to be run often. A good time to run it is after applications have been uninstalled.
3) After Ccleaner is done, reinstall AnyDVD version 6.0.8.0 and enter/double click on your key.
At this point I would try and backup your movie and see how it goes.