Seeing that you're using MOTU hardware makes me assume that you're running your DAW under OS-X, don't you?

Windows 8.1.  This is an i7 PC, 64G Ram, SSDs, etc.  

Hybrid Reverb will crash even a basic blank project with nothing but one FX bus with one instance of Hybrid Reverb.  Once Cubase is closed, that project will crash as long as Hybrid Reverb is availble to load (I have to remove it from the VST3 folder to open those projects). 

Yesterday only a latency of 128 seemed to work, but today it is back to 512, or so it seems. There may be some sequence of "default" vs. saved presets vs. saving a project with unsaved Hybrid Rev settings that contributes to when 512 works or doesn't.  But regardless, it will crash at any other setting, and often with 512 as well. 

Pro works fine, so something was changed in the Pro version vs. the standard version that fixes this.

I have a crash dump from one of my tests just now with Cubase 9.5 that I will send to Steinberg, but it will likely be a couple of weeks before they are back from the holidays to check it.  

I can confirm your findings to some extent. A quick test under Windows 7 and Nuendo 6.5 makes me run into similar (and severe) issues as you do.

This is quite obviously a bug of Hybrid Reverb. Sorry for the inconvenience - I'll try to make sure that this gets fixed ASAP.

Kind regards,

Thank you Dietz!  I appreciate the help and quick confirmation.  I will check back in from time to time to see if a fix is posted to updates. 

PS: VST2 version seems to be unaffected - this could be a temporary workaround.

You are right - thank you. 

The first times I tried the VST2 version a couple of days ago, I got an eLicenser error (not licensed to run), though the license was clearly active.  I thought it was the demo license running out of starts and after going through some hassles with elc trying to refresh the license, I never tried the VST2 version again. 

I had the same elc error when I first loaded the vst2 version just now, but after saving the project, closing Cubase and reopening, it is loading without crashing (and without the elc error, for now at least). 

I will test the VST2 version a bit more, but it does seem to be unaffected here as well. 

Please make sure that all the software (including the so-called "license database") and drivers for the eLicenser(s) are up-to-date. This is crucial, really.

Kind regards,

Absolutely.  I had been getting frequent timeouts ("operation failed") errors when trying to refresh the number of starts for the Vienna Suite/Pro demo license and as a part of troubleshooting that, updated eLicenser and ran maintenance, etc (VEPro must be closed when using eLicenser, which takes time to reload with large templates). 

Same problem here

Is there a fix now?

@TFIS said:

Same problem here

Is there a fix now?

Self quoting sucks, but:

It seems that issue depends on odd soundcard latency settings.

I ran mine on 196 samples when the crash occurs, set it to 256 worked.

@TFIS said:

It seems that issue depends on odd soundcard latency settings.

I ran mine on 196 samples when the crash occurs, set it to 256 worked.

Thanks,

I have found and fixed the issue, and an update will be released soon. I can recommend you not to use oddly sized (non powers-of-two) buffers though - it will impact performance of most plugins negatively.