>this is a new issue
Some general things to try
Run as Administrator http://forums.adobe.com/thread/969395 (Encore AND PPro)
.
Odd Errors http://forums.adobe.com/thread/670174
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Long File Names or odd characters cause problems
Read http://forums.adobe.com/thread/588273
And #4 http://forums.adobe.com/thread/666558
And This Message Thread http://forums.adobe.com/thread/665641