Serious MIDI problem.

Question

the problem is MIDI doesnt work at all on my new mac book pro retina.
the setup i have is a thunderbolt dispay, RME fireface, serato SL1 and logic pro9.
when the thunderbolt display is connected everything works amazingly. the RME fireface is connected via the FW800 port on the monitor, logic is fast and serato is reliable.
When i disconect the thunderbolt montior. everything goes belly up in terms of MIDI. in system preferances i change the input/output device to built in audio and audio from itunes etc. works great. but logic will not load. it stops and hangs when it gets to the midi part of booting up. serato will not open at all.
the most frustrating part is audioMIDI setup utility will not open MIDI settings. i can open audio settings but not MIDI. it just hangs.
i called suport from serato in new zealand today and the guy (who was awesome) remote accessed my desktop and basically had no answer. he said "i dont know."
i copy and pasted this into terminal
kextstat -kl | awk ' !/apple/ { print $6 $7 } '
from another thread where the guy had almost the same problem and this is what terminal says:
Nicholass-MacBook-Pro:EmagicUSBMIDIDriver.plugin nickrecording$ kextstat -kl | awk ' !/apple/ { print $6 $7 } '
com.serato.usb.kext(2.3.0)
com.paceap.kext.pacesupport.snowleopard(5.7.2)
com.nvidia.CUDA(1.1.0)
Nicholass-MacBook-Pro:EmagicUSBMIDIDriver.plugin nickrecording$
if anyone has any ideas of what i can do to get this working properly i would be greatly apprecieative.

Answer 1

I found a solution for this hanging MIDI Issue after many hours googling.
Probably The MIDI Server from Mac OS cant be started because a driver is not comaptibel with your OS.
That article here helped me:
Source: [http://www.sonosphere.com/MusicSoftware/MacOSX/AudioMIDISetup/]
On Mac Os X there is a folder
\$(HOME)/Library/Audio/MIDI Drivers
I moved the 2 existing drivers to the Desktop.
EmagicUSBMIDIDriver.plugin
Fireface MIDI.plugin
after that it worked. seems like one of the 2 Midid drivers causes problems. I do use a fireface interface but I dont know from where Emagic comes, it is supposed to be from ProLogic, whcih I dont rememeber I ever installed??? may be it is from garageband?
may be the fireface Plugin was not compatibel with mac os Mountain Lion on MacBookPro 15 retina?