This just started happening this weekend (August 12, 2023). I load a VST Instrument and start playing it, and then it randomly unloads while I’m playing. I’ve never had this issue in the past. It appears to have happened after the most recent Windows update (mid August).
DAW: Cubase 12 Pro (12.0.70 - Build 464)
Processor 13th Gen Intel(R) Core™ i9-13900K 3.00 GHz 24 Cores 32 Logical Processors
Installed RAM 128 GB (128 GB usable)
System type 64-bit operating system, x64-based processor
Edition Windows 11 Pro
OS build 22621.1848
Experience Windows Feature Experience Pack 1000.22642.1000.0
This is an example VST piano plug-in. I’ve tried it with other VSTs as well, it doesn’t matter. I’ll drag a VST her to load it. Then I’ll start playing and after several seconds of playing it just disappears.
Here’s the before and after. As you can see the before has the MIDI track assigned to the VST (TruePianos) and all is fine.
I start playing my midi keyboard … not even running the recorded track, just playing the VST from my midi keyboard. Then after a few seconds, the VST disappears and the MIDI track’s assignment says “Missing”, and this time, the cycle button activated on its own!
I think this issue is indeed related to the midi keyboard. Something got corrupted it appears and it was sending various commands, depending on what keys I was playing. After rebooting the midi keyboard, it appears to be okay. I’m going to keep playing to make sure that I’m back to normal here. I appreciate all of the help! Thanks again!