Does work here without problems.
Does anyone have success using An Emagic MT4 MIDI interface (and Emagic Logic Control) with Leopard 10.5 and Logic 8?
Did you install the USB MIDI driver from the Logic 8 install DVD? This one is required to operate the MT4. The driver is the same for the entire range of Emagic USB MIDI interfaces (Unitor8, AMT8 and MT4). You can install the driver over an already existing Logic installation by doing a custom install from the Logic DVD, and deselected all items except the driver (which is found in Hardware Support category of install items).I can't and desperately need help