Well I took a leap of faith and tried to connect the SL2 using a different bus cable. I plugged it into the Archon bus port and the same thing happened as before except after the system shut down, the module lights flashed, it came back up and I had solid blue lights at all modules. I was able to calibrate the salinity probe and connected a low sump float switch to the module without incident.
I'm curious if this is how all modules connect to the Archon. Users with more experience will have to weigh in. Eric told me before he shipped back the SL2 that the new salinity probes have built in temperature adjustments and that you don't need to use the temp probe with the module. I'm curious as to whether or not there are any detrimental effects to connecting the temp probe to the module if the preceding is true. I don't have the temp probe connected but will wait for others opinions and for Eric, if he sees this thread, to advise.
Once again thanks to all who came to my aid. This is a great place for sharing information and getting assistance in getting over problems that arise with this hobby.