Hello! Today, I found a bug with NEI that I don't want to talk about...
But while investigating the bug, I happened to find your Crate Upgrades.
I shift clicked on a Crate, and BAM! Amazing.
But I found one Little Flaw in your coding. I shift clicked on a sandstone block (the ground), and my game crashed.

http://pastebin.com/Kh804TkY

Running latest AA from Curse

Thanks