hello, my server crash when I have place the crystal grow accelerator next to a redstone energy conduit.

there is my crash report here:
http://pastebin.com/R0uvpXJM

If you are using AE2 rv3 alpha/beta you need the -rv3 builds of AE2 Stuff.

http://minecraft.curseforge.com/projects/ae2-stuff/files/2270295