Are you referring to WaW or BO3? I'm assuming WaW since it's in this section...

Ensure you processor is SSE 4.1 compatible. You are unable to build lights if it doesn't support it.

Spoke to pcdev_assist on twitter and found out you need a CPU with SSE4.1 which the Phenom II doesn't support.

https://twitter.com/pcdev_assist/status/782022499160629248

Interesting...

I have the same EXACT specs. I'm thinking it could be linked to the CPU.

Same thing happens to me. What's your PC specs?

Did you not pay the extra buck for the buyer protection? I believe you are fully protected to get the refund if you did get it. And i would highly recommend it considering its only a buck more.