Forum Post: all users must exit

I have a Sage 100 Premium version 5.10.4 install and I had to restore a database for the TST company. Now I want to copy inventory from another company to the TST company and when in company maint and after I select inventory to copy a system message pops up "all users must exit TST to perform this function". No one is in TST. I rebooted the server. I took the TST database offline and the put online again. Not sure where to look next.