Whenever I place a cardboard box containing a spawner it causes a crash on the server (Running a dedicated server).

Here is the crash report: http://pastebin.com/U0ZDaRCG

not a mekanism bug. seems to be NEI related.
crash log from a server with only forge, codechickencore and NEI installed when placing a spawned in spawner: http://pastebin.com/wjgxdMX2

I created an issue report with NEI Chicken-Bones/NotEnoughItems#43