was it the wrong sef url ?

No, I deleted the database and uploaded the version I had from the original site again. And it worked this time. I really don't understand why it didn't worked from the beginning.

thats good then , i had the same problem last week a quick reload is always good

anyway, thanks for your help guys!

Daniel,
When someone takes the time to help you in a forum, its nice to give them rep. Rep added Adam and Bagi

Thanks temi

Okay Temi, I will keep that in mind