Dragon Age Toolset pathfinding only for interior? [ Edited ]

[RunnerGod101]

I'm trying to generate pathfind for an exterior level, but I only get: 

-Success Generating Pathfinding data

-Failed to generate optimized physics (are path nodes generated correctly?)

I've defined my area and have a start point. When I put a floor in, it generates pathfinding for the floor, but not the terrain. The BioWare forum is offline so I can't find a lot of answers. And when I try to render lightmaps for the exterior level, I get an "Assertion failed" error message. Is there something I'm missing? Thanks.