Hi,
I was looking for another way of adding redpower 2 features to my 1.5.1 mod collection and I discoverded Minefactory (sorry for boring story). My problem is that when I run minefactory and extrabiomes together I get EXTREME lag and most of the time crah for no memory left (I have allowed 4Gb of my 8Gb to minecraft) .. but without extrabiomes .. everything is fine .. I also find out that it was causing some lag even without minefactory on servers (nothing grave). SO yeah I just wanted to see if you have a solution for this because I love your mod and I don't want to get it out of my collection!

THANKS !
Cilicou

Just an update here .. I went and checked again the log and found this :

2013-05-11 01:27:51 [SEVERE] [ForgeModLoader] The ForgeModLoader state engine has become corrupted. Probably, a state was missed by and invalid modification to a base classForgeModLoader depends on. This is a critical error and not recoverable. Investigate any modifications to base classes outside ofForgeModLoader, especially Optifine, to see if there are fixes available.

thanks for your help :)

In the future these types of issues should go on our forum thread and not on Github. Per the quote from your log it appears to be an optifine issue. We don't modify any base classes.