I think I did install a driver many incarnations ago, but not sure if that's still pertinent. A search for 'emagic,' or 'MT4' shows nothing. Here's a screenshot under 'Audio Midi setup' - which might be the best place to troubleshoot. Assuming you know what that it and where to find it? I think I ultimately added it from inside that area.

Emagic Unitor-8 MIDI Interface. It can, however, work as a standalone MIDI patchbay after routing assignments have been configured from the computer software interface. The Unitor-8's connectivity includes eight MIDI inputs and outputs, SMPTE inputs and outputs in the form of 1/4' Longitudinal Time.

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It has always simply worked - I've used it since Yosemite and earlier, on this same MacPro Attachments Screen Shot 2017-04-26 at 10.41.38 AM.png (111.92 KiB) Viewed 2592 times. Thanks David - I have that installer and as mentioned, when I first tried to install it said: 'Your computer does not need this update'. Oddly I tried once more and it installed, but still no joy. What have you tried exactly? Do you have a MIDI keyboard connected to the MT4? Have you tried playing that keyboard and see if it can trigger an instrument in Logic?

Since the MT4 appears in Audio MIDI Setup and is not grayed out, that indicates that your Mac recognizes it as connected - so it should work? Thanks everyone - put this one down to user impatience!! So I assumed it wasn't working as only the patch light came on when plugged in, but as soon as I open AMS or Logic Pro X the light switches to USB - and works fine for MIDI coming in from my old controller keyboard. I didn't get this far when I posted the question as I gave up when I saw the Patch light - note to self - be more patient! So apologies for the false alarm and thanks for all the ideas and encouragement!!

Only unanswered questions I suppose are whether I needed to install the driver at all or whether it would have worked with drivers supplied by MacOS - something for another time I guess! Thanks again Mike.

Hi All, I'm contemplating jumping off into the deep dark unknown and setting up a partition with Snow Leopard and boot camp with the idea of loading Windows 7 on it along with some music software. Does anyone by any long shot of a chance know if there is any way to get my Emagic MT 4 MIDI interface working in this environment. It's working fine on my current Mac Pro tower with OS 10.5.8. But I suspect that a Snow Leopard start up drive with Boot Camp and Windows 7 will require some sort of drivers for this. Any ideas, tips, head's up, words of warning, cautionary tales, etc with regards to running boot camp and Windows 7 with PC music software in general is welcome. PS: No, I am by no means abandoning Logic (far from it!).

This is just for a specific project. I ran Logic 5.51 under Windows XP, and used a Unitor8 with the XP USB drivers with no problems. The latest version (for Leopard 10.5.7) of the Unitor8 driver (Jan 2010, v 2.5) supports the Unitor8, the AMT8 and the MT4. I don't use boot camp, but the drivers for XP that work for the Unitor should work for the MT4. That is, notwithstanding a less than 100% compatibility between Leopard and Apple's implementation of the 'boot camp' XP partition. The PC Unitor8 USB (and even the serial version) drivers used to be downloadable: not sure if they still are on the Apple web site, but I do have them. I have not tried the Unitor PC drivers with either Vista or Windows 7.

The PC version of Logic doesn't benefit from gobs of memory. Found the MT4 PC driver. It needs to be 'unzipped' -- not sure if a decompress utility is a feature of Windows 7, but freeware Winzip or PKunzip programs will unzip it. There is a readme file that explains both the serial and USB install.

The instructions for Win2000 work with WinXP -- but I have not tried it with either Vista or Windows 7. By the way, the AMT8 and Unitor8 interfaces have a more sophisticated buffer that works with Logic to provide a tighter sync than what you can get out of the MT4. More importantly, the Unitor8 will sync to LTC, which is much tighter than syncing to MIDI.

Few things last forever (especially web links.). If you have the Logic Pro 8.0 install disks, the Unitor/AMT8/MT4 Mac OSX drivers are on that. Apple also released a Unitor update for OSX in January 2010, but the file is in dmg format, so I can't upload it here. Get it from Apple while you can.