Hey, my server is experiencing a crash relating to your mechanical package. I realize this part of the mod is in beta, but I hope my crash report provides you with some information of value.

Basically the crash occurs whenever I enter the Nether from my base (which makes some use of item transport pipes). The crash does not occur when re-entering the overworld; only when leaving to the Nether. Here is the crashlog. I hope you find it helpful:

http://sharetext.org/gU1p

already fixed.