Henrick, I have my "Mecanique" directory mounted off my root directory on "C:/" drive. I have never used the "PATH" directives since I have mounted it on my Windows 8 machine about 3 years ago. Even when I had my Windows "XP" machine I had it mounted in the same way. Make sure the device you are trying to program in in the devices.ini file located under "Mecanique/MCSPX/MCLoader/umc/src/18F/". For new devices you will have to make new entries into this .ini file.