I didn't really think it would work, but as it was you Dave, I tried it out.
No go to either I'm afraid. It wouldn't be reasonable to move the catalog to the same folder as the reports, but I still tried it just in the cause of gaining further knowledge. The default catalog location had already been set to the new server directory.
The core of the problem is the way that the security is set up for users. And also that Impromptu saves every report's catalog in Report Properties/General/Catalog. With full admin rights I can open those reports and then change the catalog in report properties. So I'm after a method that will allow me to open a report, declare a new catalog and save it. What about using SendKeys, could that work?
Simon