So ok guys the title describes the main part of the problem. I am using intellij to mod. I installed JRebel Social 6.4.7 and the jrebel minecraft plugin. The problem MIGHT be the thing that I am using 1.7.10. So when I click "Run with JRebel" it launches but it crashes.

Stacktrace:

JRebel: Starting logging to file: C:\Users\DeLL\.jrebel\jrebel.log
2016-08-06 10:19:59 JRebel: Directory 'E:\Games\MC\Modding\ltstf\src\main\resources' will be monitored for changes.
2016-08-06 10:19:59 JRebel: Directory 'E:\Games\MC\Modding\ltstf\out' will be monitored for changes.
2016-08-06 10:20:00 JRebel: Contacting myJRebel server ..
2016-08-06 10:20:02 JRebel:  
2016-08-06 10:20:02 JRebel:  #############################################################
2016-08-06 10:20:02 JRebel:  
2016-08-06 10:20:02 JRebel:  JRebel Legacy Agent 6.4.7 (201607271052)
2016-08-06 10:20:02 JRebel:  (c) Copyright ZeroTurnaround AS, Estonia, Tartu.
2016-08-06 10:20:02 JRebel:  
2016-08-06 10:20:02 JRebel:  Over the last 1 days JRebel prevented
2016-08-06 10:20:02 JRebel:  at least 0 redeploys/restarts saving you about 0 hours.
2016-08-06 10:20:02 JRebel:  
2016-08-06 10:20:02 JRebel:  Licensed to Areg Hovhannisyan (using myJRebel).
2016-08-06 10:20:02 JRebel:  
2016-08-06 10:20:02 JRebel:  
2016-08-06 10:20:02 JRebel:  #############################################################
2016-08-06 10:20:02 JRebel:  
[10:20:02] [main/INFO] [GradleStart]: Extra: []
[10:20:02] [main/INFO] [GradleStart]: Running with arguments: [--userProperties, {}, --assetsDir, C:/Users/DeLL/.gradle/caches/minecraft/assets, --assetIndex, 1.7.10, --accessToken, {REDACTED}, --version, 1.7.10, --tweakClass, cpw.mods.fml.common.launcher.FMLTweaker, --tweakClass, net.minecraftforge.gradle.tweakers.CoremodTweaker]
[10:20:03] [main/INFO] [LaunchWrapper]: Loading tweak class name cpw.mods.fml.common.launcher.FMLTweaker
[10:20:03] [main/INFO] [LaunchWrapper]: Using primary tweak class name cpw.mods.fml.common.launcher.FMLTweaker
[10:20:03] [main/INFO] [LaunchWrapper]: Loading tweak class name net.minecraftforge.gradle.tweakers.CoremodTweaker
[10:20:03] [main/INFO] [LaunchWrapper]: Calling tweak class cpw.mods.fml.common.launcher.FMLTweaker
[10:20:03] [main/INFO] [FML]: Forge Mod Loader version 7.99.36.1558 for Minecraft 1.7.10 loading
[10:20:03] [main/INFO] [FML]: Java is Java HotSpot(TM) 64-Bit Server VM, version 1.8.0_31, running on Windows 8.1:amd64:6.3, installed at C:\Program Files\Java\jdk1.8.0_31\jre
[10:20:03] [main/INFO] [FML]: Managed to load a deobfuscated Minecraft name- we are in a deobfuscated environment. Skipping runtime deobfuscation
[10:20:03] [main/INFO] [LaunchWrapper]: Calling tweak class net.minecraftforge.gradle.tweakers.CoremodTweaker
[10:20:03] [main/INFO] [GradleStart]: Injecting location in coremod cpw.mods.fml.relauncher.FMLCorePlugin
[10:20:03] [main/INFO] [GradleStart]: Injecting location in coremod net.minecraftforge.classloading.FMLForgePlugin
[10:20:03] [main/INFO] [LaunchWrapper]: Loading tweak class name cpw.mods.fml.common.launcher.FMLInjectionAndSortingTweaker
[10:20:03] [main/INFO] [LaunchWrapper]: Loading tweak class name cpw.mods.fml.common.launcher.FMLDeobfTweaker
[10:20:03] [main/INFO] [LaunchWrapper]: Loading tweak class name net.minecraftforge.gradle.tweakers.AccessTransformerTweaker
[10:20:03] [main/INFO] [LaunchWrapper]: Calling tweak class cpw.mods.fml.common.launcher.FMLInjectionAndSortingTweaker
[10:20:03] [main/INFO] [LaunchWrapper]: Calling tweak class cpw.mods.fml.common.launcher.FMLInjectionAndSortingTweaker
[10:20:03] [main/INFO] [LaunchWrapper]: Calling tweak class cpw.mods.fml.relauncher.CoreModManager$FMLPluginWrapper
[10:20:03] [main/ERROR] [FML]: The binary patch set is missing. Either you are in a development environment, or things are not going to work!
[10:20:06] [main/ERROR] [FML]: FML appears to be missing any signature data. This is not a good thing
[10:20:06] [main/INFO] [LaunchWrapper]: Calling tweak class cpw.mods.fml.relauncher.CoreModManager$FMLPluginWrapper
[10:20:06] [main/INFO] [LaunchWrapper]: Calling tweak class cpw.mods.fml.common.launcher.FMLDeobfTweaker
[10:20:07] [main/INFO] [LaunchWrapper]: Calling tweak class net.minecraftforge.gradle.tweakers.AccessTransformerTweaker
[10:20:07] [main/INFO] [sTDERR]: [java.lang.Throwable$WrappedPrintStream:println:748]: java.lang.NoClassDefFoundError: com/zeroturnaround/javarebel/gen/RebelLocator$$1
[10:20:07] [main/INFO] [sTDERR]: [java.lang.Throwable$WrappedPrintStream:println:748]:    at net.minecraftforge.gradle.GradleStartCommon$AccessTransformerTransformer.<clinit>(Unknown Source)
[10:20:07] [main/INFO] [sTDERR]: [java.lang.Throwable$WrappedPrintStream:println:748]:    at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
[10:20:07] [main/INFO] [sTDERR]: [java.lang.Throwable$WrappedPrintStream:println:748]:    at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62)
[10:20:07] [main/INFO] [sTDERR]: [java.lang.Throwable$WrappedPrintStream:println:748]:    at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
[10:20:07] [main/INFO] [sTDERR]: [java.lang.Throwable$WrappedPrintStream:println:748]:    at java.lang.reflect.Constructor.newInstance(Constructor.java:408)
[10:20:07] [main/INFO] [sTDERR]: [java.lang.Throwable$WrappedPrintStream:println:748]:    at java.lang.Class.newInstance(Class.java:438)
[10:20:07] [main/INFO] [sTDERR]: [java.lang.Throwable$WrappedPrintStream:println:748]:    at net.minecraft.launchwrapper.LaunchClassLoader.registerTransformer(LaunchClassLoader.java:88)
[10:20:07] [main/INFO] [sTDERR]: [java.lang.Throwable$WrappedPrintStream:println:748]:    at net.minecraftforge.gradle.tweakers.AccessTransformerTweaker.injectIntoClassLoader(Unknown Source)
[10:20:07] [main/INFO] [sTDERR]: [java.lang.Throwable$WrappedPrintStream:println:748]:    at net.minecraft.launchwrapper.Launch.launch(Launch.java:115)
[10:20:07] [main/INFO] [sTDERR]: [java.lang.Throwable$WrappedPrintStream:println:748]:    at net.minecraft.launchwrapper.Launch.main(Launch.java:28)
[10:20:07] [main/INFO] [sTDERR]: [java.lang.Throwable$WrappedPrintStream:println:748]:    at net.minecraftforge.gradle.GradleStartCommon.launch(Unknown Source)
[10:20:07] [main/INFO] [sTDERR]: [java.lang.Throwable$WrappedPrintStream:println:748]:    at GradleStart.main(Unknown Source)
[10:20:07] [main/INFO] [sTDERR]: [java.lang.Throwable$WrappedPrintStream:println:748]:    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
[10:20:07] [main/INFO] [sTDERR]: [java.lang.Throwable$WrappedPrintStream:println:748]:    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
[10:20:07] [main/INFO] [sTDERR]: [java.lang.Throwable$WrappedPrintStream:println:748]:    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
[10:20:07] [main/INFO] [sTDERR]: [java.lang.Throwable$WrappedPrintStream:println:748]:    at java.lang.reflect.Method.invoke(Method.java:483)
[10:20:07] [main/INFO] [sTDERR]: [java.lang.Throwable$WrappedPrintStream:println:748]:    at com.intellij.rt.execution.application.AppMain.main(AppMain.java:144)
[10:20:07] [main/INFO] [sTDERR]: [java.lang.Throwable$WrappedPrintStream:println:748]: Caused by: java.lang.ClassNotFoundException: com.zeroturnaround.javarebel.gen.RebelLocator$$1
[10:20:07] [main/INFO] [sTDERR]: [java.lang.Throwable$WrappedPrintStream:println:748]:    at net.minecraft.launchwrapper.LaunchClassLoader.findClass(LaunchClassLoader.java:191)
[10:20:07] [main/INFO] [sTDERR]: [java.lang.Throwable$WrappedPrintStream:println:748]:    at java.lang.ClassLoader.loadClass(ClassLoader.java:424)
[10:20:07] [main/INFO] [sTDERR]: [java.lang.Throwable$WrappedPrintStream:println:748]:    at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
[10:20:07] [main/INFO] [sTDERR]: [java.lang.Throwable$WrappedPrintStream:println:748]:    ... 16 more
[10:20:07] [main/INFO] [sTDERR]: [java.lang.Throwable$WrappedPrintStream:println:748]: Caused by: java.lang.NullPointerException
[10:20:07] [main/INFO] [sTDERR]: [java.lang.Throwable$WrappedPrintStream:println:748]:    at net.minecraft.launchwrapper.LaunchClassLoader.findClass(LaunchClassLoader.java:153)
[10:20:07] [main/INFO] [sTDERR]: [java.lang.Throwable$WrappedPrintStream:println:748]:    ... 18 more
Exception in thread "main" Java HotSpot(TM) 64-Bit Server VM warning: Using incremental CMS is deprecated and will likely be removed in a future release

Process finished with exit code 1

However, I can run minecraft client without JRebel normally. Just in case, here are gradlew.build and rebel.xml files:

 

buildscript {
    repositories {
        mavenCentral()
        maven {
            name = "forge"
            url = "http://files.minecraftforge.net/maven"
        }
        maven {
            name = "sonatype"
            url = "https://oss.sonatype.org/content/repositories/snapshots/"
        }
    }
    dependencies {
        classpath 'net.minecraftforge.gradle:ForgeGradle:1.2-SNAPSHOT'
    }
}

apply plugin: 'forge'

version = "1.0"
group= "net.net23.aregsroom.ltstf" // http://maven.apache.org/guides/mini/guide-naming-conventions.html
archivesBaseName = "Lot'O'Stuff"

minecraft {
    version = "1.7.10-10.13.4.1558-1.7.10"
    runDir = "eclipse"
}


runClient {
    jvmArgs '-javaagent:C:/Users/DeLL/.IdeaIC2016/config/plugins/jr-ide-idea/lib/jrebel/jrebel.jar','-Xmx1g',
            '-Drebel.plugins=E:/Games/MC/Modding/ltstf/jr-minecraft-plugin.jar', 
            '-Drebel.minecraft.skip_reload_handlers=net.minecraft.client.audio.SoundHandler'
}


dependencies {
    // you may put jars on which you depend on in ./libs
    // or you may define them like so..
    //compile "some.group:artifact:version:classifier"
    //compile "some.group:artifact:version"
      
    // real examples
    //compile 'com.mod-buildcraft:buildcraft:6.0.8:dev'  // adds buildcraft to the dev env
    //compile 'com.googlecode.efficient-java-matrix-library:ejml:0.24' // adds ejml to the dev env

    // for more info...
    // http://www.gradle.org/docs/current/userguide/artifact_dependencies_tutorial.html
    // http://www.gradle.org/docs/current/userguide/dependency_management.html

}

processResources
{
    // this will ensure that this task is redone when the versions change.
    inputs.property "version", project.version
    inputs.property "mcversion", project.minecraft.version

    // replace stuff in mcmod.info, nothing else
    from(sourceSets.main.resources.srcDirs) {
        include 'mcmod.info'
                
        // replace version and mcversion
        expand 'version':project.version, 'mcversion':project.minecraft.version
    }
        
    // copy everything else, thats not the mcmod.info
    from(sourceSets.main.resources.srcDirs) {
        exclude 'mcmod.info'
    }
}

 

and the rebel.xml file:

 

<?xml version="1.0" encoding="UTF-8"?>
<application xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://www.zeroturnaround.com" xsi:schemaLocation="http://www.zeroturnaround.com http://www.zeroturnaround.com/alderaan/rebel-2_0.xsd">
    <classpath>
        <dir name="E:\Games\MC\Modding\ltstf\src\main\resources">
        </dir>
        <dir name="E:\Games\MC\Modding\ltstf\out">
        </dir>
    </classpath>
</application>

Anyone? 

Update to a supported version; the rules clearly state only the current Minecraft version is supported. 1.7.10 is old and lacks a lot of the stuff people have worked hard to put into the current releases.

 

If lazy devs haven't updated their mods that you want to use, shake their tree, or rewrite yourself for current Minecraft.