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Pro-Q4 and Pro-Q3 Crash EuCon if Custom Mapping is used

The Pro-Q4 (and also Pro-Q3) crashes Avid's EuCon system, if using Custom Plugin Mapping (to get the dynamic EQ features to be usable on S1 knobs). My setup is 3x S1 and a Dock, and I am on Windows 11.

Avid's EuCon support person Eddie Jones said "We know their pagetables have errors in them and have reported that back." so it seems that it is a problem on Fabfilter's end and Avid have informed about it / how to fix it. Would there be any possibility of implementing a fix?

The problem is easily reproducable, just use a such Custom Map (mirroring the EuCon default EQ map but just adding the bands 1-7 Dynamic Gain for the 2nd parametere on the band Gain knob, accessed via "Sel") and the EuCon General setting "Use EQ as Insert if there is a Custom Map", EuCon will crash in any session with heavier CPU load when opening the Q4. My current workaround is removing the Custom Map file for affected sessions and re-enabling it when I can (light session, starting EQ phases etc) .

This would be *really* important for myself to get fixed, as Q4 is the only EQ I use, and using it on the S1 knobs helps immensely with my mouse arm ergonomics issues (shoulderblade pain etc) - but I cannot use the knobs with the EuCon default EQ mapping which does not access the Dynamic Gain controls, which I use constantly.

(Of course even better would be "native" support for such a mapping, but I assume this would mean that Avid would need to add support for a Dynamic Gain parameter in their default EQ mapping).

Mikko Raita

Hi Mikko,

There is indeed a known issue with custom maps and Pro-Q 4. We're currently working on that together with Avid.

Ralph (FabFilter)
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