Craftsomething

I used to, when I had it on the main class it said in the console: "Error: Could not find or load main class GradleStart" This is what I currently have set to my run condigurations: net.minecraft.launchwrapper.Launch But it gave me the error on the main post of this topic.

I have been trying to test run Minecraft 1.7.10 in eclipse but I keep occurring into this error: [18:57:29] [main/INFO]: Loading tweak class name cpw.mods.fml.common.launcher.FMLTweaker [18:57:29] [main/ERROR]: Unable to launch java.lang.ClassNotFoundException: cpw.mods.fml.common.launcher.FMLTweaker at java.net.URLClassLoader$1.run(Unknown Source) ~[?:1.8.0_25] at java.net.URLClassLoader$1.run(Unknown Source) ~[?:1.8.0_25] at java.security.AccessController.doPrivileged(Native Method) ~[?:1.8.0_25] at java.net.URLClassLoader.findClass(Unknown Source) ~[?:1.8.0_25] at java.lang.ClassLoader.loadClass(Unknown Source) ~[?:1.8.0_25] at sun.misc.Launcher$AppClassLoader.loadClass(Unknown Source) ~[?:1.8.0_25] at java.lang.ClassLoader.loadClass(Unknown Source) ~[?:1.8.0_25] at net.minecraft.launchwrapper.LaunchClassLoader.findClass(LaunchClassLoader.java:106) ~[launchwrapper-1.11.jar:?] at java.lang.ClassLoader.loadClass(Unknown Source) ~[?:1.8.0_25] at java.lang.ClassLoader.loadClass(Unknown Source) ~[?:1.8.0_25] at java.lang.Class.forName0(Native Method) ~[?:1.8.0_25] at java.lang.Class.forName(Unknown Source) ~[?:1.8.0_25] at net.minecraft.launchwrapper.Launch.launch(Launch.java:98) [launchwrapper-1.11.jar:?] at net.minecraft.launchwrapper.Launch.main(Launch.java:28) [launchwrapper-1.11.jar:?] Java HotSpot 64-Bit Server VM warning: Using incremental CMS is deprecated and will likely be removed in a future release Please help!

Thanks, it worked.

Did you figure out the problem? I'm getting the exact result... If you did my telling me I'm absolutely stumped.

I got it to work. I had JRE 8, so I uninstalled it, and got Jre7. Then I had another problem where it would say this: "no lwjgl in java.library.path" So I had to set the Native Location, then everything worked fine.

I restarted my whole forge workspace (Typed the gradlew and all that crap) but when I began coding, I needed to test run, but only to find out that the test run dosen't work. I have been searching for so long on how to fix it, but every method people put out dosen't work out for me. So hopefully someone can help me here. Console when trying to run: [21:24:32] [main/INFO] [LaunchWrapper]: Loading tweak class name cpw.mods.fml.common.launcher.FMLTweaker [21:24:32] [main/INFO] [LaunchWrapper]: Using primary tweak class name cpw.mods.fml.common.launcher.FMLTweaker [21:24:32] [main/INFO] [LaunchWrapper]: Calling tweak class cpw.mods.fml.common.launcher.FMLTweaker [21:24:32] [main/INFO] [FML]: Forge Mod Loader version 7.2.211.1121 for Minecraft 1.7.2 loading [21:24:32] [main/INFO] [FML]: Java is Java HotSpot 64-Bit Server VM, version 1.8.0_25, running on Windows 8.1:amd64:6.3, installed at C:\Program Files\Java\jre1.8.0_25 [21:24:32] [main/INFO] [FML]: Managed to load a deobfuscated Minecraft name- we are in a deobfuscated environment. Skipping runtime deobfuscation [21:24:32] [main/INFO] [LaunchWrapper]: Loading tweak class name cpw.mods.fml.common.launcher.FMLInjectionAndSortingTweaker [21:24:32] [main/INFO] [LaunchWrapper]: Loading tweak class name cpw.mods.fml.common.launcher.FMLDeobfTweaker [21:24:32] [main/INFO] [LaunchWrapper]: Calling tweak class cpw.mods.fml.common.launcher.FMLInjectionAndSortingTweaker [21:24:32] [main/ERROR] [LaunchWrapper]: Unable to launch java.util.ConcurrentModificationException at java.util.ArrayList$Itr.checkForComodification(Unknown Source) ~[?:1.8.0_25] at java.util.ArrayList$Itr.remove(Unknown Source) ~[?: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 And YES I am on 64-Bit I checked. Screenshots: http://gyazo.com/548461b7cda3d6d588b6b734d1f33c79 http://gyazo.com/22cda9786400dfa20bb04aa313cd64fe http://gyazo.com/cab99c64ed45b0e7b3d60832c1880872