It's the same problem, regardless of product. The licensing works the same.
For example:
http://usa.autodesk.com/adsk/servlet/ps/item?siteID=123112&id=4136850&linkID=2475323
I believe this is a problem where the user doesn't have sufficient rights to
the license directory on drive C.
Try logging in as the administrator, and see if the problem goes away. If
so, then that's it. You need to allow read/write access to the license
files.
They may be under C:\Documents and Settings\All Users\Application Data, or
possibly C:\C_DILLA.
--Cy--