Hi,
It's not possible to select Engines and Mod OSC as modulators for the Multimode filter. In the new Pigments version 3.5.0.1831.
It's actually possible to select the Engines in other filters, and then it also will be engaged for the Multimode filter, if you select that filter afterwards. This will not work when selecting MOD osc.
Taking the release notes into account, then i assume, it should be possible to select the Engines as modulator for the Multimode filters now.
And why not being able to select the Mod OSCs as modulaters for the Multimode filter?
I assume this is a oversight, that will be corrected soon.
BTW: It's great the Engines can cross modulate now.