Just bought the parts for my new PC today and while building it, I ran into a small problem... The screws from the Cooler Master Hyper 212 Plus don't seem to be long enough to screw into the baseplate.
I've fastened one side of the X-shaped bracket in, but in doing that I've lifted up the other side, which then can't be fastened in. I've made sure that everything's lined up correctly.
Post #4 here has the step I'm on in the installation, but there's no problem there with the screws not being long enough.
^+1 It's like changing a tire. Tighten one lug nut a little, for #2 move to the one across from #1 and tighten that one a little, then for #3 pick one next to #2 and tighten it a little, finally #4 is the one you haven't touched yet. It's an X pattern as Ryan said.
Let's see if this picture works:
1 <- 4
. \. ./ .
. . X . .
. /. .\ .
3 <- 2
EDIT: Hm. Not the best picture. Hopefully you get the idea. Also, make sure that your backplate's holes are flush against the motherboard. It was once described as the legs of the table, where if you had an AMD board the tabletop would rest against the motherboard.