Support Request: Falling makes an error?

    Okay, I really don't know if this is an IC2 error (I have many mods installed) but I was thinking this might be, since it hasn't happened to me before I updated IC2. Here is the error


    Code
    java.lang.IllegalAccessError: tried to access field aar.bz from class forge.ArmorProperties	at forge.ArmorProperties.ApplyArmor(ArmorProperties.java:119)	at xb.c(EntityPlayer.java:827)	at aar.a(EntityLiving.java:505)	at xb.a(EntityPlayer.java:744)	at aar.e(EntityLiving.java:723)	at xb.e(EntityPlayer.java:1376)	at ms.a(Entity.java:664)	at ms.b(Entity.java:543)	at uh.b(EntityPlayerSP.java:41)	at aar.a_(EntityLiving.java:817)	at xb.a_(EntityPlayer.java:1273)	at aar.d(EntityLiving.java:1037)	at xb.d(EntityPlayer.java:395)	at uh.d(EntityPlayerSP.java:212)	at aar.B_(EntityLiving.java:381)	at xb.B_(EntityPlayer.java:198)	at vq.a(World.java:1672)	at vq.f(World.java:1647)	at vq.m(World.java:1545)	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)



    Any help or suggestions?


    EDIT: Sorry for making this post, found out the problem was just using the most resent version of forge instead of the most stable version -.- Backdating it to the most stable worked.