**System Information** asus laptop k53s series
Operating system and graphics card win 7 64 bit
**Blender Version** 2.70
Broken: (example: 2.69.7 4b206af, see splash screen)
Worked: (optional)
**Short description of error** can't pan view. I use button 4 on mouse worked fine in 2.69.
can't
**Exact steps for others to reproduce the error**
Based on a (as simple as possible) attached .blend file with minimum amount of steps