The first report that I opened up a support ticket for did not respond when asked for a phone number so we could trouble shoot the problem.
The second person to report the problem came back to say that "I restarted my PC and on restart removed the WinCache file" fixed the problem for them.
try rebooting the computer and deleting the Dreamweaver cache file once again, If that does not resolve the error, I will start a support ticket for you as well.