Recently lex updated forge to 1.3.2.7 however i was noticing something weird with IC2 armors(bat/lappack etc). I do notice that this update actually do change some armor code however this forge version is required by the beta forestry (1.3.3.10) to automatically pickup items into it's backpack which is the IPickupHandler. To confirm this here's the error report when you got hit:
Code
java.lang.AbstractMethodError: ic2.common.ItemArmorBatpack.getProperties(Lxb;Lll;Lyq;I)Lforge/ArmorProperties;
at xb.c(EntityPlayer.java:842)
at aar.a(EntityLiving.java:499)
at xb.a(EntityPlayer.java:744)
at xd.c(SourceFile:69)
at xd.a(SourceFile:75)
at yc.m_(SourceFile:42)
at aar.d(EntityLiving.java:971)
at xd.d(SourceFile:26)
at agy.d(SourceFile:48)
at aar.B_(EntityLiving.java:375)
at xd.B_(SourceFile:30)
at vq.a(World.java:1673)
at vq.f(World.java:1648)
at vq.m(World.java:1546)
at net.minecraft.client.Minecraft.k(SourceFile:1594)
at net.minecraft.client.Minecraft.x(SourceFile:709)
at net.minecraft.client.Minecraft.run(SourceFile:662)
at java.lang.Thread.run(Unknown Source)I can just use the officially released forestry and forge 1.3.2.(1< x <4) but this is something that maybe useful