I have had this same issue. I have found that there is a program called onboard.exe that I must kill first thru task manager/end process. Once I do that, I can run SFMT again. However, I have just had to uninstall the entire product since it gave me an "Unknown Error". So now I'm going to reinstall the product and hope it works.
I've put a lot of time into trying to get SFMT to work. It's sketchy at best. I have also tried Drive Mapper, but that kills my OS memory.
I've asked support, but they don't know or have answers.
Let me know if you find anything that helps.