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Need some help w/Forge 1.7.2.... its getting annoying

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So my son has been bugging me to help him with modding the game to make it so he can have star wars items in the game.  Ok no big deal... Here I am 4 hours later and have figured out how to roll back the versions of minecraft to 1.7.2 to use the mod.  But now after all that got forge 1.7.2 installed using the windows installer,  got the old launcher yadda yadda.  

 

Here is what my output log from game in the launcher:

 

[14:33:40] [main/INFO] [LaunchWrapper]: Loading tweak class name cpw.mods.fml.common.launcher.FMLTweaker
[14:33:40] [main/INFO] [LaunchWrapper]: Using primary tweak class name cpw.mods.fml.common.launcher.FMLTweaker
[14:33:40] [main/INFO] [LaunchWrapper]: Calling tweak class cpw.mods.fml.common.launcher.FMLTweaker
[14:33:40] [main/INFO] [FML]: Forge Mod Loader version 7.2.217.1147 for Minecraft 1.7.2 loading
[14:33:40] [main/INFO] [FML]: Java is Java HotSpot(TM) 64-Bit Server VM, version 1.8.0_161, running on Windows 10:amd64:10.0, installed at C:\Program Files\Java\jre1.8.0_161
[14:33:40] [main/INFO] [LaunchWrapper]: Loading tweak class name cpw.mods.fml.common.launcher.FMLInjectionAndSortingTweaker
[14:33:40] [main/INFO] [LaunchWrapper]: Loading tweak class name cpw.mods.fml.common.launcher.FMLDeobfTweaker
[14:33:40] [main/INFO] [LaunchWrapper]: Calling tweak class cpw.mods.fml.common.launcher.FMLInjectionAndSortingTweaker
[14:33:40] [main/ERROR] [LaunchWrapper]: Unable to launch
java.util.ConcurrentModificationException
 at java.util.ArrayList$Itr.checkForComodification(Unknown Source) ~[?:1.8.0_161]
 at java.util.ArrayList$Itr.remove(Unknown Source) ~[?:1.8.0_161]
 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:?]
Java HotSpot(TM) 64-Bit Server VM warning: Using incremental CMS is deprecated and will likely be removed in a future release

 

Any Ideas on what I need to do to fix said issue?  I have removed the game entirely and reinstalled to no avail,  the only mod that is there is the starwars mod under the .minecraft/mods folder .  Even with that not in there its not loading.  

 

Any help would be appreciated.  My eyes are going crosseyed trying to figure this out.O.o

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