I have found that the MotioninJoy drivers have several problems:
1) The software is horribly written and can possibly overwrite your drivers for other devices, rendering them useless.
2) The uninstallation process is incomplete and leaves the drivers on your system if you wish to remove them later. This will also stop other devices from functioning if the drivers overwrote something useful.
3) The UI for the "DS3 Tool" looks like it was made by a 3 year old. The colors are clashing, the button placement is random, and the general intuitiveness of the whole thing is nonexistent.
Just stick to the drivers that the OP linked and you'll be fine.