Built a Universal Framework, still getting "file was built for arm64 which is not the architecture being linked (x86_64)"

I am trying to incorporate a framework into another project and run it on the iOS simulator. I created a universal framework using this technique: http://ift.tt/14pXkSP but I'm still getting

file was built for arm64 which is not the architecture being linked (x86_64)

What is wrong here?