forge 1.7.10 not working !

[aliallam]

forge 1.7.10 is not working whenever i try launch the game it loads the bar then gives me this message

 

[19:44:59] [main/INFO] [LaunchWrapper]: Loading tweak class name cpw.mods.fml.common.launcher.FMLTweaker
[19:44:59] [main/INFO] [LaunchWrapper]: Using primary tweak class name cpw.mods.fml.common.launcher.FMLTweaker
[19:44:59] [main/INFO] [LaunchWrapper]: Calling tweak class cpw.mods.fml.common.launcher.FMLTweaker
[19:44:59] [main/INFO] [FML]: Forge Mod Loader version 7.99.40.1614 for Minecraft 1.7.10 loading
[19:44:59] [main/INFO] [FML]: Java is Java HotSpot(TM) 64-Bit Server VM, version 1.8.0_121, running on Windows 10:amd64:10.0, installed at C:\Program Files\Java\jre1.8.0_121
[19:44:59] [main/INFO] [LaunchWrapper]: Loading tweak class name cpw.mods.fml.common.launcher.FMLInjectionAndSortingTweaker
[19:44:59] [main/INFO] [LaunchWrapper]: Loading tweak class name cpw.mods.fml.common.launcher.FMLDeobfTweaker
[19:44:59] [main/INFO] [LaunchWrapper]: Calling tweak class cpw.mods.fml.common.launcher.FMLInjectionAndSortingTweaker
Exception in thread "main" [19:44:59] [main/INFO] [STDERR]: [java.lang.Throwable$WrappedPrintStream:println:-1]: java.lang.IncompatibleClassChangeError
[19:44:59] [main/INFO] [STDERR]: [java.lang.Throwable$WrappedPrintStream:println:-1]:     at java.util.TimSort.countRunAndMakeAscending(Unknown Source)
[19:44:59] [main/INFO] [STDERR]: [java.lang.Throwable$WrappedPrintStream:println:-1]:     at java.util.TimSort.sort(Unknown Source)
[19:44:59] [main/INFO] [STDERR]: [java.lang.Throwable$WrappedPrintStream:println:-1]:     at java.util.Arrays.sort(Unknown Source)
[19:44:59] [main/INFO] [STDERR]: [java.lang.Throwable$WrappedPrintStream:println:-1]:     at cpw.mods.fml.relauncher.CoreModManager.sort(CoreModManager.java)
[19:44:59] [main/INFO] [STDERR]: [java.lang.Throwable$WrappedPrintStream:println:-1]:     at cpw.mods.fml.relauncher.CoreModManager.sortTweakList(CoreModManager.java)
[19:44:59] [main/INFO] [STDERR]: [java.lang.Throwable$WrappedPrintStream:println:-1]:     at cpw.mods.fml.common.launcher.FMLInjectionAndSortingTweaker.acceptOptions(FMLInjectionAndSortingTweaker.java:33)
[19:44:59] [main/INFO] [STDERR]: [java.lang.Throwable$WrappedPrintStream:println:-1]:     at net.minecraft.launchwrapper.Launch.launch(Launch.java:114)
[19:44:59] [main/INFO] [STDERR]: [java.lang.Throwable$WrappedPrintStream:println:-1]:     at net.minecraft.launchwrapper.Launch.main(Launch.java:28)