FabFilter User Forum

VST3 plug-in state not saved and restored in Vienna Ensemble Pro

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!

Eric Barndollar
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