Tin

When I downloaded 1.7.2 forge and open it with minecraft.It launched unsuccessfully and appeared the words : [19:56:55] [main/INFO] [LaunchWrapper]: Loading tweak class name cpw.mods.fml.common.launcher.FMLTweaker [19:56:55] [main/INFO] [LaunchWrapper]: Using primary tweak class name cpw.mods.fml.common.launcher.FMLTweaker [19:56:55] [main/INFO] [LaunchWrapper]: Calling tweak class cpw.mods.fml.common.launcher.FMLTweaker [19:56:55] [main/INFO] [FML]: Forge Mod Loader version 7.2.211.1121 for Minecraft 1.7.2 loading [19:56:55] [main/INFO] [FML]: Java is Java HotSpot 64-Bit Server VM, version 1.8.0_25, running on Windows 7:amd64:6.1, installed at C:\Program Files (x86)\Minecraft\runtime\jre-x64\1.8.0_25 [19:56:55] [main/WARN] [FML]: The coremod codechicken.core.launch.CodeChickenCorePlugin does not have a MCVersion annotation, it may cause issues with this version of Minecraft [19:56:55] [main/WARN] [FML]: The coremod codechicken.nei.asm.NEICorePlugin does not have a MCVersion annotation, it may cause issues with this version of Minecraft [19:56:55] [main/INFO] [LaunchWrapper]: Loading tweak class name cpw.mods.fml.common.launcher.FMLInjectionAndSortingTweaker [19:56:55] [main/INFO] [LaunchWrapper]: Loading tweak class name cpw.mods.fml.common.launcher.FMLDeobfTweaker [19:56:55] [main/INFO] [LaunchWrapper]: Calling tweak class cpw.mods.fml.common.launcher.FMLInjectionAndSortingTweaker [19:56:55] [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:?] Java HotSpot 64-Bit Server VM warning: Using incremental CMS is deprecated and will likely be removed in a future release

P.S. Can someone tell me how to do?

When I installed the forge 1.6.4which was downloaded from your website and load it,there is an error: Game output : 3月 24, 2015 7:01:58 下午 net.minecraft.launchwrapper.LogWrapper log 資訊: Loading tweak class name cpw.mods.fml.common.launcher.FMLTweaker 3月 24, 2015 7:01:58 下午 net.minecraft.launchwrapper.LogWrapper log 資訊: Using primary tweak class name cpw.mods.fml.common.launcher.FMLTweaker 3月 24, 2015 7:01:58 下午 net.minecraft.launchwrapper.LogWrapper log 資訊: Calling tweak class cpw.mods.fml.common.launcher.FMLTweaker 2015-03-24 19:01:58 [資訊] [ForgeModLoader] Forge Mod Loader version 6.4.49.965 for Minecraft 1.6.4 loading 2015-03-24 19:01:58 [資訊] [ForgeModLoader] Java is Java HotSpot 64-Bit Server VM, version 1.8.0_25, running on Windows 7:amd64:6.1, installed at C:\Program Files (x86)\Minecraft\runtime\jre-x64\1.8.0_25 2015-03-24 19:01:58 [警告] [ForgeModLoader] The coremod appeng.transformer.AppEngCore does not have a MCVersion annotation, it may cause issues with this version of Minecraft 2015-03-24 19:01:58 [資訊] [ForgeModLoader] [AppEng] Core Init 2015-03-24 19:01:58 [警告] [ForgeModLoader] The coremod ic2.core.coremod.IC2core does not have a MCVersion annotation, it may cause issues with this version of Minecraft Java HotSpot 64-Bit Server VM warning: Using incremental CMS is deprecated and will likely be removed in a future release