I now have Repsnapper installed and working. Unfortunately it has made no difference in my ability to connect to the Mendel. Although Pronterface was telling me that the port was unavailable, Repsnapper tells me that it is timing out while trying to connect but has no further information. This happens whether I attempt to connect using the original COM! port on the machine or the virtual COM3 port created by the USB/TTY interface
I am wondering if the whole problem lies with the drivers that I installed for the FTDI USB/TTY chip that is used on the Techzone board. I am going to see if there are older versions available.
This worked so easily under Linux. It is very frustrating to be this close to a working machine and be stopped once again.