NavMeshModifier does not work with non basic meshes

Hello!

I downloaded a resource from the Unity store: Buildings_pack_light. They're just to mock up a scene and are some basic meshes with some textures on them. I have two of these buildings in my scene and when I apply a navmeshmodifier on them I receive multiple errors (one for each sub-component) "RuntimeNavMeshBuilder . Source Mesh does not allow read access: <object name>".

In my situation I have used a NavMeshModifierVolume as the shapes are nearly rectangular, however in many situations this may not be the case.

Thank you.

 

It turns out the import on the assets was reset to not allow read/write even though I swear I double checked this. My mistake, please disregard. It works fine after I resolved this issue.