Hi @chrishennessey, sorry to hear about your issues.
Am I correct in assuming you are referring to this software @ https://github.com/mikethrussell/EyeXMouse
I am afraid this is produced by a third party and not by Tobii, so the best thing would be to post your issue on the project Github issues board.
That being said, when an application cannot find MSVCR120.dll, this is typically resolved by the reinstallation of the Visual C++ Redistributable Packages
which you can download @ https://www.microsoft.com/en-us/download/details.aspx?id=40784
Also worth trying is a complete uninstall/reinstall of the affected software. Failing all that, ensure Windows is fully up to date.
Best of luck in resolving your issue. Best wishes.