I think my problem is advanced solar panels, i'll ask the mod/addon dev about it 
Posts by LngForgotten
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I'm now using experimental versions, which have a different crash, which inturn could also mean I'm doing something wrong or have forgotten to install something.
cpw.mods.fml.common.LoaderException: java.lang.NoSuchMethodError: ic2.api.recipe.IMachineRecipeManager.addRecipe(Lnet/minecraft/item/ItemStack;Ljava/lang/Object;)V
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for me it's saying railcraft is the problem
The mod Railcraft (Railcraft) requires mod versions [IC2@[2.0.44,)] to be available