MacBook Pro Retina 2.6 GHz 2012
Blender crashes whenever I try to export any format except .obj. Also, last week I was importing objects with 1.6 million plus vertices into Unity from Blender, with no problem. Now, anything with more than like 1 thousand vertices crashes Unity, and Blender can only handle .obj and .blend, no other format.
Try to export other formats, or try to get super high poly objects into Unity, to reproduce the error. I'm using the latest versions of both Blender and Unity.