At least you seem to be on the right track now, the test build you sent me worked nicely. So I am confident there will be a version which can completely replace VirtualDubMod "when it's done".
Meanwhile I left the office for weekend. I remember I had installed AviSynth+ 0.1 in a more or less recent pfmod build there (not the latest though, at least 2 weeks old)... At home now, I will try again to test it with one of the latest AviSynth+ builds I can find.
_
P.S.:
Here on my home PC, just installed AviSynth+ r1858-pfmod, both 32 and 64 bit versions of vdfiltermod version 11 (build 37277 / 37278) work immediately.