MS3D's B3D exporter is borked: it exports animation in the z-axis backwards and results in totally unusable files.
The only solution I've found is to save the .ms3d, open it in Ultimate Unwrap and save it from Ultimate to the .b3d format.
Honestly, if you're using MS3D, Ultimate is the perfect companion for all sorts of reasons, only one of which is decent B3D exporting. Well worth the expense.
The only solution I've found is to save the .ms3d, open it in Ultimate Unwrap and save it from Ultimate to the .b3d format.
Honestly, if you're using MS3D, Ultimate is the perfect companion for all sorts of reasons, only one of which is decent B3D exporting. Well worth the expense.