I am on 4.52.3526.1 and when I try to export motion on a non-standard character (daz genesis 8) as BVH, I’m told “Failed to export the following clip(s) as BVH” and nothing saves.
Do not use Current Motion option. Pick Custom and them choose saved motion files from content folders. You may even select multiple motions at a time and do batch export.
Yes that works, but are the other options not intended to work ? it’s over a year since the original post, maybe it should be added to the manual that we should only use the “custom” option as the others do not work.