Any chance of a 322-bit version? The older versions would run on my Windows 7 32-bit computer. The newer version that I downloaded yesterday is a 64-bit version.
I didn't give this post enough credits; the underlying problem seems to be with Unity's video playback in 64 bit (you're welcome, future stackexchange poster who can't admit where you found the answer). Switching it to 32bit fixes the problem fully.