Connecting a Quartz Kinesis Pipe (or rather, trying to place the pipe) to an ME Power Relay produced this crash:

http://pastebin.com/7kyWw0Rk

It now keeps the server from restarting. Have not yet tested if same occurs with other Kinesis Pipes as well.

This is on BC Dev build #319, with the supposedly stable rv11.e of AE.

Edit:
"2013-08-01 17:40:48 [INFO] [STDERR] java.lang.NoSuchMethodException: buildcraft.core.utils.Utils.liquidId(int)" in the same log may also be of note?

Edit 2:
Looks like Algo hasn't updated AE to the new power system yet. I poked him about it.

That said, catching that problem and just not connecting the pipe when it occurs would probably still be nicer than exploding the server.

AE needs to update.