If another user is logged in and reassigning envelope numbers, you'll need to wait until they're finished or ask them to log out. If this is not the case, login tables are likely corrupt.

ACS creates .Net and .Lck files to prevent two users from editing the same record at the same time. ACS deletes these files when you exit the program properly, through the Exit button or the X at the top of the window.

Sometimes these files are not properly deleted. This could occur if:

• Your workstation does not respond.

• You restart your computer.

• Your computer restarts after a power surge .

• You shut down your computer without exiting ACS.

If this occurs, you can manually delete the files