Boy I thought I began using it earlier than that. Maybe I'm thinking of RSLogix 5. I know when both of them came out they constantly crashed losing your work. Better yet to fix it, you needed to reboot! I started using Icom AI5 and AI500. Those where great programs. I hated the 6200 stuff and from what people tell me APS was bad too. Also I didn't have to deal with Interchange.