Hey,
managed to use my MBox2 with 10.3.9 and 10.3.3 Drivers without any problem (also replug not necessary after reboot) on Yosemite 10.10.5 :)
Its an quite easy hack,
cause StartupItems are not used anymore in newer versions of OS X,
you simply got to launch the MBox2Service by launchctl :)
Install Instructions:
1. Install 10.3.9 or 10.3.3 Drivers from
here
2. Download "com.digidesign.mbox2.plist" from
here
3. Copy "com.digidesign.mbox2.plist" it into "/Library/LaunchAgents"
4. Open terminal and run "sudo chown root:wheel /Library/LaunchAgents/com.digidesign.mbox2.plist" (without quotes)
5. Open terminal and run "sudo chmod 644 /Library/LaunchAgents/com.digidesign.mbox2.plist" (without quotes)
6. Open terminal and run "sudo launchctl load -wF /Library/LaunchAgents/com.digidesign.mbox2.plist" (without quotes)
7. Delete "DigidesignLoader" from "/Library/StartupItems"
8. Reboot
So whenever a user logs in Mbox2Service will start and power it up...
Also tried to integrate it in early bootprocess but didnt help cause caused bootlag and sound playback wasnt available even if Mbox2 was powered up...
so HF