System Information
Windows 8.1 64 bit Nvidia
Blender Version
2.77
**completely freezes when fbx is imported. Tested on the fbx of just 500 kb size.*
link to the file :
Exact steps for others to reproduce the error
Based on a (as simple as possible) attached .blend file with minimum amount of steps
Hope this is enough to understand.
Note - My first ever participation in development of blender via bug reporting !
Thank you mates !

