I am having trouble figuring out how to trap an error that is produced if someone else has a table open when I am trying to open it exclusively inside a program . In my program I want it to let the current user know he can't do a specific operation, update and pack a table, because someone else is in the table. When I run it at present I get the standard error message box with the choice to cancel, ignore or help. A wait window would work stating that some else is in the table and this operation will now cancel but any 'ON ERROR' procedure I've made won't catch it because the program errors on SET EXCLUSIVE ON Select 0 USE openjobs Order 1 Any suggestions? Thanks in advance