I'm running Windows 7 with 8GB RAM on a current-generation Macbook Pro, and it seems that I'm having a bit of a problem. While playing New Vegas, my game client quits unexpectedly, with zero error, to the desktop, as if I've pressed alt-F4. I'm not sure how to further diagnose this error, as there is no error message. My graphics drivers are updated also.

Thank you.

http://segmentnext.com/2010/10/19/fallout-new-vegas-errors-crashes-freezes-fixes/

This site number 14, hoepfully will fiz your starting game error, im using a mac pro as well and it fixed the starting error, This fixes the intro video error