There is only one file type that uses the .OBP extension:
Bryce Object File
3D objects file used by Bryce, a 3D modeling application; contains a collection of objects, which are used as a library for importing 3D elements into a model or scene; used for storing geometric shapes, terrains, vegetation, and other objects.
|DAZ 3D Bryce||Commercial|
Updated: August 7, 2010