boot.wim could not be opened to check his size

Hello,

Recently i updated symantec ghost console to 11.5.1.2298. When i want to start a ghost session, it fails with this error "details for: to virtual partition. the file "{manifest}\\sources\\boot.wim could not be opened to check his size". When i restart the ghostsession, it runs ok. I' ve already rebuild the winpe file:http://www.symantec.com/connect/forums/virtual-partition-failure-could-not-be-opened-check-bootwim-size. But it didn't helped.

What can be the problem?

Greetings, Andy

attached; manifest.txt