Recently, our copy of RSLogix 500 began acting strangely. It opens fine, but when a processor is selected to go on-line, we get an error message that says |RSLogix has encountered and error...". What's really strange is that it occassionally doesnt happen. BTW, we're using RSLinx Gateway on another PC and have TCP driver set up on the PC with the proble. Worked fine until last week?. Any suggestions?