Hi Guys! Appreciate all of the comments. Here's my responses to your questions:

1. I have a Focusrite 8i6 audio interface, a MOTU Micro Lite MIDI interface, MOTU 828 Mk3 interface and a MOTU Express XT MIDI interface. I have had no success with any of these interfaces. I have no problem with audio, I can run multiple audio apps, stream from the internet, run RB and BIAB at the same time...all with no issues. All have multi client audio drivers.

2. I can run RB/BIAB and send MIDI info to the VoiceLive 3 with no problem on any of the above interfaces OR I can run the Voicelive Editor and control the VL3 with no problem. The problem comes up when I try to run RB/BIAB AND the VoiceLive Editor at the same time. Doing this results in an "out of memory" error in RB...even though I have 32Gb of memory.

3. What seems to be happening is that whichever application is opened first...either RB/BIAB or the VoiceLive Editor...that application grabs the MIDI over USB driver and then does not allow the other applications to access MIDI over USB.

4. This appears to be a well known problem with Windows that does not appear on MAC's. As I understand this, it happens because the VoiceEditor software and RB use a class compliant USB MIDI driver that is provided by Windows. This driver is a single client driver only.

5. I can get around this using MIDI 5 pin DIN's. If I run DIN's from the VL3 to any of my interfaces everything works fine....I can run RB, the Voicelive Editor, the VL3 and all my synths with no problem and control of each. While MIDI over USB would be 100's of times faster, MIDI with DIN's does work...just slower. So why not continue this way? The new version of the VoiceLive Editor supports MIDI over UISB only!

I will continue to explore this issue. Will try to run MIDIOX and LoopMidi today to see if I can get around this limitation. In the mean time any and all ideas are most appreciated.

Thanks guys!

Jeff

Win11, Intel i7 7700K 4.2Ghz, 32Gb RAM, 2x1Tb HD, 500Gb NVMe, BIAB/RB 2025, MOTU 828MK3 audio, MOTU Midi Express, Yamaha Montage 7, DX7II, TX802, Motif XS Rack, Roland Fantom XR Rack, Oberheim Matrix 1000, VoiceLive3 Extreme, Kontakt 6, SampleTank 4.3