Our team is using the nav6 and yesterday we tried to connect to and use the data from the nav6. Naturally, things did not go smoothly. In the end, we realized their was no option on the "Serial Open" vi that allowed connection via USB to serial adapter. We ended up changing "Serial Open" to allow the new serial port and wanted to share it with the rest of the first community. I have attached both a "drop in" replacement for USB serial capabilities, and a PDF chronicling what was changed.
nav6serial.pdf
WPI_SerialPortOpen.vi