**System Information**
Operating system and graphics card
win 7 64bit
**Blender Version**
Broken: (example: 2.69.7 4b206af, see splash screen)
Worked: (optional)
2.74
**Short description of error**
not making smoothing groups for ue4. Blender 2.73 does
**Exact steps for others to reproduce the error**
Based on a (as simple as possible) attached .blend file with minimum amount of steps