Mastercam X Editor/MP.dll freezing on startup

When I generate gcode using the G1 button in the operations manager, it automatically opens the Mastercam X Editor. The window opens and the cursor spins for a while, but then it says (Not Responding) in the title bar. The same thing happens if I try to run MP.dll manually. I know this is a very generic question, but is this something anyone has seen before? I can give more specifics if necessary, but I was hoping someone had encountered this before and they knew how to fix it.

A few quick things:
Mastercam X5
all files stored on a local drive
Windows 7 Ultimate 64bit

Try changing the default editor to Cimco.

It nearly seams that a data path is incorrect,
or it's trying to post to a folder that is un-available
ie. you may have changed the name

Im having the same issue... I think its to do with the motherboard, Im running a striker II extreme with a 9800 GX2 PNY GPU

-Jack

Changing the editor to Cimco worked great. Thanks!