FabFilter

Hi FabFilter folks,

Using VSL Vienna Ensemble Pro 8 as host, the VST3 versions of FabFilter plug-ins fail to save and restore state when the host project is closed and reopened; they all revert back to default parameters.

- Other VST3 audio effect plug-ins I have tested work without issue within Vienna Ensemble Pro.
- The VST2 and AU versions of FabFilter plug-ins work without issue.

I have noticed this issue for several years, but current system specs and versions I just re-tested with:
- macOS 15.7.4 (Apple Silicon)
- VSL Vienna Ensemble Pro 8.0.585
- FabFilter Pro-Q 4.12 (as example)

Let me know if I can provide additional info, thanks!

Hi Eric,

That's interesting. We currently don't have an active license for VEP here at the office. We'll have to get it running and see if we can reproduce. We'll get back to you about this.

Thanks, Ralph.

VSL does offer 30 day trial licenses FYI.

If there are logs anywhere I can help send (or a debug plug-in version that captures more of the VST3 API call sequence), just let me know. Appreciate you looking into!