The Blender BVH importer has a bug. If you try to import a BVH file which has Japanese bone names, it won't import into Blender, and you will get an error message ...

Poser 3 only uses a subset of the full OBJ file format. Here's everything you need to know about OBJ files if your just using Poser. This document leaves out all non- Poser usable commands and options ...