I finally figured out why GHEB would not work in P_4...
First, I thought it was a 'bad OBJ sequence', so ran the GHEB OBJ through UVunwrap to re-arrange it. No, same bodiless whatsit. Then I edited the CR2 to put OBJ in Geometries. Now it was 'can't open resource'...
Took me rather too long to spot the route was \ not "\" or :::
D'uh...
Good news & bad: I figured it out before I got a reply from author 'DAD'. But my e-mail query bounced...
FWIW, while playing with GHEB, I dressed
Posette in default P_4 body-sock. That crumpled and shrank to match the GHEB's mutant limbs...
Hmmm...