Error message

Hi all! I need some help here: Some modifications have been done on the PO to make sure that it’s only the person who created the PO that should release it and to allow certain persons ( supervisors) to be able to do that task too. When doing my test: trying to release the PO as usual in Navision, with the same user having same permissions ( Super and all), In my Native DB, it works fine. In the SQL DB ( database of the client), I have this error message: " YOu do not have permissions to read the session table" What is the problem here? another strange thing is that if i’m using another user having the same permissions , he is able to release or re-open the PO. Thanks for helping me.

Turn on the debugger and see where the error for permission is comming from.