Snapping bone to the feet in P8 ...

Are you using a european keyboard layout with normally a comma as decimal divider ?? And is your P8 lower than latest SR ?? 

Then it's a old bug that is coming from ignored european decimal comma input. This is fixed in the latest SR ... ok, for most input boxes, not for all but definit for the setup room.

But I normally also rigg in Poser7. In my opinion that's much smother working in the GUI than P8 and all the input boxes are clearer in reaction to keyboard or mouse strokes. Ok, they have a bug in P7 for only accepting 3 decimals behind the comma but hey, it's Poser and you can't get all in one go ... :-)