October 14, 2013 at 4:06 PM #1 crash when placing electrical engine from forestry - using ic2 - 264http://pastebin.com/Ph20NCsG
October 14, 2013 at 4:22 PM Official Post #2 Are you using the special version of forestry that is for IC² experimental? If not, thats your problem.
October 14, 2013 at 5:43 PM #3 2.3.0.3 was the last version still built for classic IC2. If you use .0.4 or .0.5 you should be fine.
