MS model number is 5975B, and the GC is 6890N. I had an OS issue and had to reinstall the software. after reinstalling the agilent software and configuring the network, when i try to launch the software i get a message that says it cant start or run MSTOP and that the configuration should be deleted and redone. i have done so with the same results. 1. what is MSTOP? 2. how do i get beyond this issue?