Hi all,
eraser just sent me an updated version of his tool. You can find it in the tools releases section

1.2 (Apr-16-2008)
- Source code revision
- Error handling improvements

the tool comes with full sources too!

http://arteam.accessroot.com/releases.html

on CRCETL too: http://www.woodmann.com/collaborative/tools/Reflexive_games_Unwrapper

Thanks Shub, as always.