> I know it's incredibly but i did make exactly the same things on both
> machines !?

In that case, I have no idea :-)

Probably someone else will come along and tell you what's wrong...

It are also the exact same Firebird versions?

With regards,

Martijn Tonies
Database Workbench - developer tool for InterBase, Firebird, MySQL & MS SQL
Server.
Upscene Productions
http://www.upscene.com