Hey!
I've just got a crash easy to fix 
Reproduce: place iron ores into the molecular transformer.
Display Spoiler
java.lang.IndexOutOfBoundsException: Index: 43, Size: 42
at java.util.ArrayList.rangeCheck(Unknown Source)
at java.util.ArrayList.get(Unknown Source)
at advsolar.client.gui.GuiMolecularTransformer.func_74189_g(GuiMolecularTransformer.java:105)
at net.minecraft.client.gui.inventory.GuiContainer.func_73863_a(GuiContainer.java:168)
at net.minecraft.client.renderer.EntityRenderer.func_78480_b(EntityRenderer.java:1149)
at net.minecraft.client.Minecraft.func_71411_J(Minecraft.java:946)
at net.minecraft.client.Minecraft.func_99999_d(Minecraft.java:838)
at net.minecraft.client.main.Main.main(SourceFile:101)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
at java.lang.reflect.Method.invoke(Unknown Source)
at net.minecraft.launchwrapper.Launch.launch(Launch.java:131)
at net.minecraft.launchwrapper.Launch.main(Launch.java:27)