Hey Jim,
Stacey battled some odd issues like that. She's out, but offered the following:
"I did have some issues with the 2100. The two things that I did to fix what I was seeing was, number one, turning off the Wi-Fi on my laptop and connecting directly to the LAN port of the system. Number two is to make sure that he has the most updated version of PC Pro. If you’re trying to connect to a system that has a higher software level than PC pro can handle, it is not frontwards compatible."