minecraft launcher not opening forge [duplicate]

when I try to open forge from the minecraft launcher, it doesn't load. I even did it without mods and it still didn't work. This is what I got from the game output:

[14:11:24] [main/INFO] [LaunchWrapper]: Loading tweak class name cpw.mods.fml.common.launcher.FMLTweaker
[14:11:24] [main/INFO] [LaunchWrapper]: Using primary tweak class name cpw.mods.fml.common.launcher.FMLTweaker
[14:11:24] [main/INFO] [LaunchWrapper]: Calling tweak class cpw.mods.fml.common.launcher.FMLTweaker
[14:11:24] [main/INFO] [FML]: Forge Mod Loader version 7.10.1.1160 for Minecraft 1.7.10 loading
[14:11:24] [main/INFO] [FML]: Java is Java HotSpot(TM) 64-Bit Server VM, version 1.8.0_25, running on Mac OS X:x86_64:10.10.1, installed at /Library/Internet Plug-Ins/JavaAppletPlugin.plugin/Contents/Home
[14:11:24] [main/INFO] [LaunchWrapper]: Loading tweak class name cpw.mods.fml.common.launcher.FMLInjectionAndSortingTweaker
[14:11:24] [main/INFO] [LaunchWrapper]: Loading tweak class name cpw.mods.fml.common.launcher.FMLDeobfTweaker
[14:11:24] [main/INFO] [LaunchWrapper]: Calling tweak class cpw.mods.fml.common.launcher.FMLInjectionAndSortingTweaker
[14:11:24] [main/ERROR] [LaunchWrapper]: Unable to launch
java.util.ConcurrentModificationException
    at java.util.ArrayList$Itr.checkForComodification(ArrayList.java:901) ~[?:1.8.0_25]
    at java.util.ArrayList$Itr.remove(ArrayList.java:865) ~[?:1.8.0_25]
    at net.minecraft.launchwrapper.Launch.launch(Launch.java:117) [launchwrapper-1.9.jar:?]
    at net.minecraft.launchwrapper.Launch.main(Launch.java:28) [launchwrapper-1.9.jar:?]

I'm using 1.7.10 forge. i got the latest forge (10.13.2.1230) and it still doesn't work.

Mods:

• Bibliocraft
• Assassins Craft
• parachute
• buildcraft
• mocreatures
• minions mod
• more nature
• nuclear bomb mod

PC Specifications:

• iMac 24-inch, early 2008
• 2.8 GHz Intel Core 2 Duo
• 4 GB 800 MHz DDR2 SDRAM
• ATI Radeon HD 2600 Pro 256 MB