Operating system:Mac os x Yosemite 10.10.5
Graphics card:ATI Radeon HD 2600 Pro 256 MB
Short description of error
I open blender i get the window that says its opening it says its running then it just stops i tried restarting my computer i have a model due soon so i tried getting this so i could work at home but it wont open
Exact steps for others to reproduce the error
Based on the default startup or an attached .blend file (as simple as possible).