Not sure what "ChanVis" is but the folder in which all the relevant files are located is definitely in the primary Runtime where the Poser app lives...

But Poser is looking for files with the wrong file names.  That can't be good.  The app certainly doesn't seem smart enough to make context-appropriate changes on the fly.

For the record, I'm still directing the program to the V4toV3 files by hand.  Endless...