java.lang.VerifyError: (class: mod_IC2AdvancedMachines, method: getGuiFor signature: (Lvi;ILbq;)Lxe;) Wrong return type in function
at java.lang.Class.getDeclaredFields0(Native Method)
at java.lang.Class.privateGetDeclaredFields(Class.java:2291)
at java.lang.Class.getDeclaredFields(Class.java:1743)
at ModLoader.setupProperties(ModLoader.java:1728)
at ModLoader.addMod(ModLoader.java:268)
at ModLoader.readFromModFolder(ModLoader.java:1305)
at ModLoader.init(ModLoader.java:820)
at ModLoader.AddAllRenderers(ModLoader.java:189)
at afq.<init>(afq.java:80)
at afq.<clinit>(afq.java:9)
at net.minecraft.client.Minecraft.a(SourceFile:265)
at net.minecraft.client.Minecraft.run(SourceFile:648)
at java.lang.Thread.run(Thread.java:680)