I reformatted my computer yesterday and reinstalled / updated my after effects CC. Now whenever I open the program it crashes within 30 seconds giving me a crash log then kicking me out. I've also tried uninstalling AE and creative cloud then reinstailling.
processor INTEL i5-3570 @ 3.40GHz
16 Gig RAM
NVIDIA Geforce GTX 670
Provide the crash info and exact system info as well as any error messages you get:
Just saying that it crashes without providing more details isn't particularly meaningful.