After some further investigation, I believe the directory of User patches in question came from a time some years back when I was working with a non-A...

A breakthrough this morning, from Dadi in the GP Forum. Operational summary is that removing 0 length files from the C:\ProgramData\Arturia\Pres...

To most closely (or exactly) reproduce my setup, the MIDI-CHANNEL-FILTER is found here:

In this .zip are the two .unify files.  Synth-8-MPE-All-Arturia-01.zip

In Unify I created two different patches - one with all U-he synths, and one with all Arturia synths.In GP, I added Unify to the wiring diagram.and at...

@Wavesequencer Perhaps this will be useful - attached is a file with 8 patches built in Unify, where each patch has just a single synth plugin (from t...

Here is a .gig file built today from scratch in Unify2 inside of GP. It contains all 8 original synths and the other plugins. I have observed this...

Thanks for your reply! FWIW - The old machine is Win 10 Pro. The new machine is Win 11 Pro. Both have 32 GB of physical memory. I have shared...

Here is a log of isolation testing. Most striking to me is the inconsistency of how many of these crashed on reload the first time and then did not cr...

I managed to fire up my prior retired machine. On this machine (Quasar) there is GP 5.0.9, and of course a set of plugins. Interestingly (to me anyway...

Here is a document showing Copilot response to "What could cause Gig Performer to crash when loading Unify when other hosts do not?". How much of th...

At this link are more results and files (.unify and .gog).

Thanks! More interesting data, though I don't know what to make of it - Your .gig file crashed GP the first time I tried to load it. I tried t...

@wavesequencer Very interesting. Thanks very much for running this test. If there is any chance of you posting the x16 patch and the .gig file, ...

No difference, instant crash. BTW, I wrote to Arturia today - so too early for their response.    Synth-8-MPE-Pigments-x8-VST3.zip

Tried the same experiment with Serum2 x8 (instead of Pigments x8). GP did not crash.    Synth-8-MPE-Serum2-x8-VST3.zip

So strange, the difference in behavior! Here is a video showing the reproducible crash here:  

Another data point - using 8 instances of Pigments VST (only) in Unify 2 will create the crash in GP. It seems the U-he plugs are in-the-clear, at...

Good to know, thanks!  

I hope Arturia comes thru for you on that. When I get a chance I can try some different loads, like maybe 8 Serums, things like that.  

No substantive comments yet from the GP folks since I've reduced the issue to the current extremely simple demonstration.  

Yes, just so.

And yes, this AM I still get the same crash(es) when using GP - so that's not a freak behavior based on the day!

And inside of S1 I sequentially loaded 'Synth 8 MPE A', 'Synth 8 MPE C', 'Synth 8 MPE A' and produced a log (attached), which looks OK to me.  ...

Tested this AM with Unify 2 in Studio One Pro. Loads and plays, neither S1 nor Unify crashes. (pic attached)  Unify-1-Synth-8-MPE-A-in-Studio-O...

Tested this AM with Unify 1 in Reaper. Loads and plays, neither Reaper nor Unify crashes. (pic attached)  Unify-1-Synth-8-MPE-A-in-Reaper-v7.72...

As I said above, no crash observed in Bitwig. Tested this AM with Unify 1 in Live. Loads and plays, neither Live nor Unify crashes. (pic attache...

Is there something to be observed that would show this, if that is what is happening?    

I just did a test inside of GP (v5.3.3, the latest) - Put Unify 2 inside the default Wiring Diagram. Turned on logging. Attempted load of 'Synt...

Attached here is a picture of good ole 'Synth 8 MPE A' loaded in Standalone Unify 2, along with Resource Monitor - Memory. As can be seen, I believe...

Thanks for all the commentary!I've got the log going on a StandAlone Unify 2. I've attached a log, probably not directly relevant to anything at this ...

Yes (inside of GP) Linnstrument, Seaboard Rise 2, Exquis. (These all play fine, so long as Unify/GP don't crash.) Is this what you mean? (see ...

Thank you for your reply, and suggestion. Working by elimination as you suggest, what I observe is that a very simple gig file with all 8 of the MPE...

Thanks Paul.  

OK, did this. No problems observed. That does suggest the plugins are involved - but mystery: why is there a problem inside GP and not a problem...

Thanks much for your reply! Here are the plugin versions: Diva Rev 16519 VST2Bazille Rev 16518 VST2Hive 2 Rev 16520 VST2SQ80 Version 1.6.5.6366 V...

Picture attached showing the 8 Synths in Unify. Other 8-synth files with different sets of synths are crashing too. I don't know if one or more of...

Hi. I'm hoping this upgrade can have it's moment of priority ASAP. I have a large set of work still chained to Unify 1 because Unify 2 lacks the 6...

Thanks. I confirm. Loading the .guru placed the library at the top level rather then in the Libraries subdir. I moved it manually and now all is ...

Just mentioning this again here. Would sure like to move up to Unify 2 in all cases instead of having to rely on Unify 1 just for the sake of the ex...

Thank you very much for the rundown Paul. As it turns out, the simplest explanation was correct ... Once I ensured the incoming MIDI was only on...