Got the following crash report from casting the following spell. The spell compiled fine and I was able to put into a CAD.

crash-2016-02-27_18.50.14-client.txt

could you give us the spell json as well?

Here you go. I also found out that when switching the 0 from the ConstantWrapper to a greater number, the bug does not occur.
http://pastebin.com/wjx6ZUDX

Is the spell json the copy clipboard in teh spell programmer or is it a separate file?

copy clipboard.

https://github.com/Vazkii/Psi/blob/master/src/main/java/vazkii/psi/common/spell/constant/PieceConstantWrapper.java#L53
this line should return 0D, not 0. That's the bug.

Vazkii, to prevent future errors of this kind, could non-trick pieces take a generic?