Hi, I'm the author of TCG's Chill Pack and have your mods in version 0.9 of my pack and it runs with no problem, but I'm currently working on the 1.0 release of the pack and only now seem to have caught an error from your mod:

[06:49:00] [Client thread/ERROR]: Caught exception from iChunUtil java.lang.NoSuchMethodError: net.minecraft.client.Minecraft.getMinecraft()Lnet/minecraft/client/Minecraft; at ichun.common.core.util.ResourceHelper.init(ResourceHelper.java:22) ~[ResourceHelper.class:?] at ichun.client.core.ClientProxy.init(ClientProxy.java:32) ~[ClientProxy.class:?] at ichun.common.iChunUtil.preLoad(iChunUtil.java:93) ~[iChunUtil.class:?] at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[?:1.8.0_25] at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[?:1.8.0_25] at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[?:1.8.0_25] at java.lang.reflect.Method.invoke(Method.java:483) ~[?:1.8.0_25] at cpw.mods.fml.common.FMLModContainer.handleModStateEvent(FMLModContainer.java:532) ~[forge-1.7.10-10.13.4.1614-1.7.10.jar:?] at sun.reflect.GeneratedMethodAccessor2.invoke(Unknown Source) ~[?:?] at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[?:1.8.0_25] at java.lang.reflect.Method.invoke(Method.java:483) ~[?:1.8.0_25] at com.google.common.eventbus.EventSubscriber.handleEvent(EventSubscriber.java:74) ~[guava-17.0.jar:?] at com.google.common.eventbus.SynchronizedEventSubscriber.handleEvent(SynchronizedEventSubscriber.java:47) ~[guava-17.0.jar:?] at com.google.common.eventbus.EventBus.dispatch(EventBus.java:322) ~[guava-17.0.jar:?] at com.google.common.eventbus.EventBus.dispatchQueuedEvents(EventBus.java:304) ~[guava-17.0.jar:?] at com.google.common.eventbus.EventBus.post(EventBus.java:275) ~[guava-17.0.jar:?] at cpw.mods.fml.common.LoadController.sendEventToModContainer(LoadController.java:212) ~[forge-1.7.10-10.13.4.1614-1.7.10.jar:?] at cpw.mods.fml.common.LoadController.propogateStateMessage(LoadController.java:190) ~[forge-1.7.10-10.13.4.1614-1.7.10.jar:?] at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[?:1.8.0_25] at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[?:1.8.0_25] at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[?:1.8.0_25] at java.lang.reflect.Method.invoke(Method.java:483) ~[?:1.8.0_25] at com.google.common.eventbus.EventSubscriber.handleEvent(EventSubscriber.java:74) ~[guava-17.0.jar:?] at com.google.common.eventbus.SynchronizedEventSubscriber.handleEvent(SynchronizedEventSubscriber.java:47) ~[guava-17.0.jar:?] at com.google.common.eventbus.EventBus.dispatch(EventBus.java:322) ~[guava-17.0.jar:?] at com.google.common.eventbus.EventBus.dispatchQueuedEvents(EventBus.java:304) ~[guava-17.0.jar:?] at com.google.common.eventbus.EventBus.post(EventBus.java:275) ~[guava-17.0.jar:?] at cpw.mods.fml.common.LoadController.distributeStateMessage(LoadController.java:119) [LoadController.class:?] at cpw.mods.fml.common.Loader.preinitializeMods(Loader.java:556) [Loader.class:?] at cpw.mods.fml.client.FMLClientHandler.beginMinecraftLoading(FMLClientHandler.java:243) [FMLClientHandler.class:?] at net.minecraft.client.Minecraft.func_71384_a(Minecraft.java:480) [bao.class:?] at net.minecraft.client.Minecraft.func_99999_d(Minecraft.java:878) [bao.class:?] at net.minecraft.client.main.Main.main(SourceFile:148) [Main.class:?] at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[?:1.8.0_25] at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[?:1.8.0_25] at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[?:1.8.0_25] at java.lang.reflect.Method.invoke(Method.java:483) ~[?:1.8.0_25] at net.minecraft.launchwrapper.Launch.launch(Launch.java:135) [launchwrapper-1.12.jar:?] at net.minecraft.launchwrapper.Launch.main(Launch.java:28) [launchwrapper-1.12.jar:?]

The full log can be found here

Am I missing something (my eyes go cross looking at log files for too long)?

Don't use the deobf version in obfuscated environment.

"iChunUtil-4.2.3-deobf.jar".

Also lol that mod is ancient

It works in 0.9 of my modpack. Why the issue only now?

Also, it is only there as it was pulled in as a dep for another one of your mods.