thank you but unfortunately it s not working... I have searched and read old threads, the only way to make it work is to update the bin folder to 1.5.1.0.
I have only 1.5.0.0 and 1.5.0.9.
In the past the used to use a downgrade patch from 1.9 to 1.5.1.0 or the official client 1.5.1.0 directly :S