Initial Setup Question

Hi I just got the GoPiGo and I have installed the Python library for the GoPiGo and when I try to start the program it says:

bus = smbus.SMbus(1)
IOerror: [errno 2] no such file or directory

Ive tried reinstalling smbus and updating everything and I keep getting this error message. Please help!

midnightlama7, what version of the Pi are you using?

Which option did you choose here: