Weird, I can't seem to use the securables tab of the DB user to assign the stored procedure that was created under this schema to the user, I can add it, but when I press "ok", it forgets it again. Think there is something inherently wrong with this schema, as it is the only one that it happens with

Edit: Ok, I think I may have been looking at the wrong place for the schema owner, it was set to another login, I think this was the cause of most of my problems, as I can run both stored procedures now, irrespective of schemas.

Thanks!