Arghhhh, I just spent 2 hours on trying to figure out why I had my sysgen process would fail really early… And when looking at the error.log file (located in C:\WINCE600) I could just see this kind of messages:

Res2Res:  ERROR: Line: 267  File: c:\ce\tools\ostools\wincetools\rescommon\checksum.cpp

Didn’t make more sense… But after investigation (2 LONG hours!!), I noticed that some of the processes used in the build process of Platform BUilder (res2res.exe was the one causing problem to me) had been identified as a virus threat by my anti-virus system. I excluded the full C:\WINCE600 folder from the virus scan and now everything works smoothly.