Thanks Marc,
I am set up in Stand alone mode, my lights seem to work as you described. I may be wrong but I had all the cables in the same box and only had one power supply for my DCS 52, which I run independently from the system. On the PR3 I have two wires hooked directly to the test track and run a USB to the computer (thats it) which I am assuming after reading is my issue, although as I said before, these are the same cables I had it set up with originally. I have never has a serial adaptor, so I am going to assume that is the solution even though it worked with these cables before. ( I have several dozen locos set up in the roster that I programmed using this cable.
Also, if running as Stand Alone, in configuration I have the system connection set to Loconet PR3, the serial port is correct ?(cu.usbmodem1421), command station type is PR3 Stand alone programmer, conn prefix is L, connection name is Loconet.
I am unfamiliar with a system console log or where to access it.
Getting ready to ditch the Mac and grab a pc...
Thanks again,
Craig