New Virus Ti Polar owner here. Love the sound, hate the bugs.
I updated to macOS 10.12.4 (auto-updated, my bad...) and now my Virus TI software doesn't work.
Can use as Audio device, but the TI software and MIDI doesn't fly.
Error in the TI sw says 'MIDI driver failed to start or is not installed' [etc].
Using Logic 10.3.1.
iMac mid 2011.
Tried re-installing the drivers, no bueno.
Ran Disk Permissions (first aid), no dice.
Console log, searching 'midi' yields:
default 10:47:09.526805 -0700 MIDIServer 56: notice: MIDIServer.cpp:354: FullInit: MIDIServer  starting; arch=x86_64
default 10:47:09.882813 -0700 MIDIServer 56: notice: <usbio> USBMIDIDevice.cpp:72: Initialize: starting MIDI, mOutPipe=0x1, mInPipe=0x2
So, looks like it's starting, so not sure wtf is going on.
Any pointers on what to look for, and in what logs?
(I am a software guy, I know how to get dirty with the OS