I mustbe mistaking on the step where the OSD failed.
A command window display "Processing partition 1 of 2" so it is during the imagew process.
I try to launch imagew manually and i get the same problem
I try using the one in 2.0 : Error while unpacking program, code LP5. PLease report to author
I restore the old imagew.exe (from 8.8 SP1 version) : same as the first problem
The corrupted imagew.exe has no known virus (Symantec Endpoint 11), is weight is 904 Ko (instead of 884ko) and his date is 23/05/2008 15:05
I don't understand why but the restored one has changed is weight during osd ...
Sorry but we have a virus (call virut) on our core