Ah man, how embarrassing.

I've reuploaded the patch. The fix is to change num tech reqs to 2 instead of 3.
Number of Tech Req := 2
Tech Area Req 1 := Point-Defense Weapons
Tech Level Req 1 := 2
Tech Area Req 2 := Shields
Tech Level Req 2 := 2
No need to redownload, as that's all the bug was.