Trying to launch Direwolf20 pack (ver 1.4) and get a Java Binary has stopped crash when I hit the "Initialising Mods Phase 2" stage on RFTools

Set up a game using only RFTools mods and got the same crash.

Crash report here,

`---- Minecraft Crash Report ----
// Uh... Did I do that?

Time: 1/1/18 5:58 PM
Description: There was a severe problem during mod loading that has caused the game to fail

net.minecraftforge.fml.common.LoaderExceptionModCrash: Caught exception from RFTools (rftools)
Caused by: java.lang.NoSuchMethodError: mcjty.lib.McJtyRegister.registerLater(Lnet/minecraft/block/Block;Lmcjty/lib/base/ModBase;Ljava/lang/Class;Ljava/lang/Class;)V
at mcjty.rftools.blocks.MachineFrame.(MachineFrame.java:22)
at mcjty.rftools.blocks.ModBlocks.initBaseBlocks(ModBlocks.java:95)
at mcjty.rftools.blocks.ModBlocks.init(ModBlocks.java:35)
at mcjty.rftools.proxy.CommonProxy.preInit(CommonProxy.java:130)
at mcjty.rftools.proxy.ClientProxy.preInit(ClientProxy.java:51)
at mcjty.rftools.RFTools.preInit(RFTools.java:149)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:483)
at net.minecraftforge.fml.common.FMLModContainer.handleModStateEvent(FMLModContainer.java:606)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:483)
at com.google.common.eventbus.Subscriber.invokeSubscriberMethod(Subscriber.java:91)
at com.google.common.eventbus.Subscriber$SynchronizedSubscriber.invokeSubscriberMethod(Subscriber.java:150)
at com.google.common.eventbus.Subscriber$1.run(Subscriber.java:76)
at com.google.common.util.concurrent.MoreExecutors$DirectExecutor.execute(MoreExecutors.java:399)
at com.google.common.eventbus.Subscriber.dispatchEvent(Subscriber.java:71)
at com.google.common.eventbus.Dispatcher$PerThreadQueuedDispatcher.dispatch(Dispatcher.java:116)
at com.google.common.eventbus.EventBus.post(EventBus.java:217)
at net.minecraftforge.fml.common.LoadController.sendEventToModContainer(LoadController.java:253)
at net.minecraftforge.fml.common.LoadController.propogateStateMessage(LoadController.java:231)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:483)
at com.google.common.eventbus.Subscriber.invokeSubscriberMethod(Subscriber.java:91)
at com.google.common.eventbus.Subscriber$SynchronizedSubscriber.invokeSubscriberMethod(Subscriber.java:150)
at com.google.common.eventbus.Subscriber$1.run(Subscriber.java:76)
at com.google.common.util.concurrent.MoreExecutors$DirectExecutor.execute(MoreExecutors.java:399)
at com.google.common.eventbus.Subscriber.dispatchEvent(Subscriber.java:71)
at com.google.common.eventbus.Dispatcher$PerThreadQueuedDispatcher.dispatch(Dispatcher.java:116)
at com.google.common.eventbus.EventBus.post(EventBus.java:217)
at net.minecraftforge.fml.common.LoadController.distributeStateMessage(LoadController.java:148)
at net.minecraftforge.fml.common.Loader.preinitializeMods(Loader.java:602)
at net.minecraftforge.fml.client.FMLClientHandler.beginMinecraftLoading(FMLClientHandler.java:270)
at net.minecraft.client.Minecraft.func_71384_a(Minecraft.java:466)
at net.minecraft.client.Minecraft.func_99999_d(Minecraft.java:377)
at net.minecraft.client.main.Main.main(SourceFile:123)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:483)
at net.minecraft.launchwrapper.Launch.launch(Launch.java:135)
at net.minecraft.launchwrapper.Launch.main(Launch.java:28)

A detailed walkthrough of the error, its code path and all known details is as follows:

-- System Details --
Details:
Minecraft Version: 1.12.2
Operating System: Windows 10 (amd64) version 10.0
Java Version: 1.8.0_25, Oracle Corporation
Java VM Version: Java HotSpot(TM) 64-Bit Server VM (mixed mode), Oracle Corporation
Memory: 392184256 bytes (374 MB) / 950534144 bytes (906 MB) up to 2863661056 bytes (2731 MB)
JVM Flags: 4 total; -XX:HeapDumpPath=MojangTricksIntelDriversForPerformance_javaw.exe_minecraft.exe.heapdump -Xmx3072m -Xms256m -XX:PermSize=256m
IntCache: cache: 0, tcache: 0, allocated: 0, tallocated: 0
FML: MCP 9.42 Powered by Forge 14.23.1.2582 7 mods loaded, 7 mods active
States: 'U' = Unloaded 'L' = Loaded 'C' = Constructed 'H' = Pre-initialized 'I' = Initialized 'J' = Post-initialized 'A' = Available 'D' = Disabled 'E' = Errored

| State | ID             | Version      | Source                        | Signature                                |
|:----- |:-------------- |:------------ |:----------------------------- |:---------------------------------------- |
| UCH   | minecraft      | 1.12.2       | minecraft.jar                 | None                                     |
| UCH   | mcp            | 9.42         | minecraft.jar                 | None                                     |
| UCH   | FML            | 8.0.99.99    | forge-1.12.2-14.23.1.2582.jar | e3c3d50c7c986df74c645c0ac54639741c90a557 |
| UCH   | forge          | 14.23.1.2582 | forge-1.12.2-14.23.1.2582.jar | e3c3d50c7c986df74c645c0ac54639741c90a557 |
| UCE   | rftools        | 7.15         | rftools-1.12-7.15.jar         | None                                     |
| UCE   | rftoolscontrol | 1.6.8        | rftoolsctrl-1.12-1.6.8.jar    | None                                     |
| UCE   | rftoolsdim     | 5.05         | rftoolsdim-1.12-5.05.jar      | None                                     |

Loaded coremods (and transformers): 
GL info: ' Vendor: 'NVIDIA Corporation' Version: '4.6.0 NVIDIA 388.71' Renderer: 'GeForce GTX 1070/PCIe/SSE2'`

You're using mismatching versions of McJtyLib and RFTools.

Bah, have updated to the correct versions but am still getting the Java Binary Stopped error. The launcher is not producing a crash log anymore for some reason.

Game output log here https://pastebin.com/7xfTq07Y

Any update on this? There's no errors in what you last posted; without a crash log, there's nothing we can do.

Managed to sought it out on the end. Something wasn't right with Java on my system. Clean Java install didn't fix it, so in the end I gave up and reinstalled the OS and a fresh version of Java. After that everything worked. Not sure why it didn't like RFTools or what the actual issue with Java was but it works now.