Malwarebytes won't run...

I was completely blown away Major Geeks' ability to remove rootkit virus and restore connectivity on my computer that here I am returning to see if you guys can help on a friend's computer!

I'm going through the process of downloading the various programs and am having a problem getting Malwarebytes to install and run correctly. As suggested, I changed the name of the exe file to mb.exe. After install the program opened but then this message popped up: "Malwarebytes Anti-Malware has stopped working. A problem has caused the program to stop working correctly. Windows will close the program and notify you if a solution is available." It closes and when I try again to update it or start the scan I get the same message and the program closes. Any suggestions?