I uninstalled, replaced the midi driver, re installed 5.1, restarted. Didn't work until I launched Virus control and installed the update with that. VC was offline but it finally worked. I'm not the brightest bulb in the tanning bed and i can't explain how it worked but it did. Perhaps I just got lucky. I don't remember updating my computer to 10.9.5. I don't understand this stuff like you guys. Good luck everyone. I hope this helps.