Hi Nate.

I tried version 2.7.2 but it didn't work.

First I installed version 2.7.2 on the existing version 2.7.1 but the error was still present.
After that I uninstalled the .NET Framework and its updates and MultiMiner with all its files. Then I reinstalled MultiMiner 2.7.2 and after that .NET Framework with its updates. The error disappeared, but after about 30 min MultiMiner stopped working and gave me the same error message. It was mining CHNcoin. I tried to restart many times, but I could restart only after deactivation of the CHNcoin configuration.
At the moment it is mining Novacoin and Unobtanium. I will inform you if it is stable with the CHNcoin configuration disabled.

Thanks.

Bye,
lcettuzzi