Export audio errors with missing tracks, stuck/held notes

Hi all,

Some weird errors in audio exports tonight. I’ve recorded a project with a bunch of virtual instruments and the resulting audio export had tracks missing (e.g. a Rhodes track I recorded in my project didn’t sound at all in the exported file) and the Hammond track had a bunch of stuck/held notes that just sounded like a complete mess.

I rendered the MIDI tracks as audio before exporting a stereo mixdown.

Any ideas as to what causes this and how to fix it? I’ve never experienced this before.

And yes I had wifi disabled!

Cubase Pro 11.5
Windows 10


Is it the same, if you don’t export to the audio before?

How does the audio sound like, if you Solo it track by track? Is it OK?

Do you export Single channel: Stereo Out only?