at the top of any page that your calling a session variable or you'll get that error
That's great Tracy, many thanks for your help, works a treat.
At present I am having to manually add code to each page that redirects depending on UserGroupID, is that the best way to work this do you know?
I have 4 groups, depending on who logs on they get a different home page I( have added this to a 'blank' home page used only to redirect users to their homepage:
Do you know if SA does this automatically?