java.util.ConcurrentModificationException
	at java.util.ArrayList$Itr.checkForComodification(ArrayList.java:901) ~[?:1.8.0_73]
	at java.util.ArrayList$Itr.remove(ArrayList.java:865) ~[?:1.8.0_73]
	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:?]
	at net.minecraftforge.gradle.GradleStartCommon.launch(Unknown Source) [start/:?]
	at GradleStart.main(Unknown Source) [start/:?]
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[?:1.8.0_73]
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[?:1.8.0_73]
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[?:1.8.0_73]
	at java.lang.reflect.Method.invoke(Method.java:497) ~[?:1.8.0_73]
	at com.intellij.rt.execution.application.AppMain.main(AppMain.java:144) [idea_rt.jar:?]
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 0