Cycles Crash 2.70

So I’m having trouble rendering an animation out, this goes with all current blends to be frank, when the render settings are set to Quicktime: Video codec:MPEG-4 and click animation, blender crashes, anyone can shed light as to why this is happening. even when the blend is tried to render in a previous version, it crashes, seems like the files have become infected??

running 2.70 (Also tested 2.69)
on a Mac Ver. 10.9.2
Processor: 2.8GHz Intel Core i5
Memory: 4 GB 1333 MHz DDR3
Graphics: ATI Radeon HD 5750 1024 MB

bump, also tried to do the same on a college mac, it crashed as well.
Processor: 2.5GHz Intel Core i5
Memory: 8 GB 1333 MHz DDR3