MARATRAC PROGRAMMING ERROR 2, ???

[RILockGuy]

I have a Maratrac Lowband radio that we programmed with no issues, about 2 months after programming we decided to try changing a setting and ended up with a error #2 when the RSS tried to communicate with the radio. We tried multiple cables, one factory and one aftermarket - both setups program other low band Maratracs just not this one. We checked all pins for cold solder joints and rang them out - all seem connected well. We get the same voltage (4.93) at the programming pin (7) in the radio. It just doesn't seem to be found by the software. We also reinstalled the software with a fresh installation, still no communications. Any ideas?? Its powered by a 50 AMP supply and is feeding a BR-4 Antenna, its also utilizing a brand new cable to an advanced control head. I am at a complete loss. Thanks in advance.

- Rob