[18:41:22] [main/INFO] [LaunchWrapper]: Loading tweak class name cpw.mods.fml.common.launcher.FMLTweaker
[18:41:22] [main/INFO] [LaunchWrapper]: Using primary tweak class name cpw.mods.fml.common.launcher.FMLTweaker
[18:41:22] [main/INFO] [LaunchWrapper]: Calling tweak class cpw.mods.fml.common.launcher.FMLTweaker
[18:41:22] [main/INFO] [FML]: Forge Mod Loader version 7.10.18.1180 for Minecraft 1.7.10 loading
[18:41:22] [main/INFO] [FML]: Java is Java HotSpot 64-Bit Server VM, version 1.7.0_11, running on Windows 8:amd64:6.2, installed at C:\Program Files\Java\jre7
[18:41:23] [main/INFO] [FML]: Loading tweaker optifine.OptiFineForgeTweaker from OptiFine_1.7.9_HD_U_D2.jar
[18:41:23] [main/INFO] [LaunchWrapper]: Loading tweak class name cpw.mods.fml.common.launcher.FMLInjectionAndSortingTweaker
[18:41:23] [main/INFO] [LaunchWrapper]: Loading tweak class name optifine.OptiFineForgeTweaker
[18:41:23] [main/INFO] [LaunchWrapper]: Loading tweak class name cpw.mods.fml.common.launcher.FMLDeobfTweaker
[18:41:23] [main/INFO] [LaunchWrapper]: Calling tweak class cpw.mods.fml.common.launcher.FMLInjectionAndSortingTweaker
[18:41:23] [main/INFO] [LaunchWrapper]: Calling tweak class cpw.mods.fml.common.launcher.FMLInjectionAndSortingTweaker
[18:41:23] [main/INFO] [LaunchWrapper]: Calling tweak class optifine.OptiFineForgeTweaker
OptiFineForgeTweaker: acceptOptions
OptiFineForgeTweaker: injectIntoClassLoader
OptiFine ClassTransformer
OptiFine URL: file:/C:/Users/Apostolis/AppData/Roaming/.minecraft/Mods/OptiFine_1.7.9_HD_U_D2.jar
OptiFine ZIP file: java.util.zip.ZipFile@5a391d46
[18:41:23] [main/INFO] [LaunchWrapper]: Calling tweak class cpw.mods.fml.relauncher.CoreModManager$FMLPluginWrapper
[18:41:24] [main/INFO] [FML]: Found valid fingerprint for Minecraft Forge. Certificate fingerprint e3c3d50c7c986df74c645c0ac54639741c90a557
[18:41:24] [main/INFO] [FML]: Found valid fingerprint for Minecraft. Certificate fingerprint cd99959656f753dc28d863b46769f7f8fbaefcfc
[18:41:24] [main/INFO] [LaunchWrapper]: Calling tweak class cpw.mods.fml.relauncher.CoreModManager$FMLPluginWrapper
[18:41:24] [main/INFO] [LaunchWrapper]: Calling tweak class cpw.mods.fml.common.launcher.FMLDeobfTweaker
OptiFineForgeTweaker: getLaunchArguments
[18:41:25] [main/INFO] [LaunchWrapper]: Launching wrapped minecraft {net.minecraft.client.main.Main}
[18:41:26] [main/ERROR] [LaunchWrapper]: Unable to launch
java.lang.reflect.InvocationTargetException
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[?:1.7.0_11]
at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source) ~[?:1.7.0_11]
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source) ~[?:1.7.0_11]
at java.lang.reflect.Method.invoke(Unknown Source) ~[?:1.7.0_11]
at net.minecraft.launchwrapper.Launch.launch(Launch.java:134) [launchwrapper-1.9.jar:?]
at net.minecraft.launchwrapper.Launch.main(Launch.java:28) [launchwrapper-1.9.jar:?]
Caused by: java.lang.NoClassDefFoundError: net/minecraft/util/Session$Type
at net.minecraft.util.Session.<init>(Session.java:38) ~[bbs.class:?]
at net.minecraft.client.main.Main.main(SourceFile:128) ~[Main.class:?]
... 6 more
Caused by: java.lang.ClassNotFoundException: net.minecraft.util.Session$Type
at net.minecraft.launchwrapper.LaunchClassLoader.findClass(LaunchClassLoader.java:188) ~[launchwrapper-1.9.jar:?]
at java.lang.ClassLoader.loadClass(Unknown Source) ~[?:1.7.0_11]
at java.lang.ClassLoader.loadClass(Unknown Source) ~[?:1.7.0_11]
at net.minecraft.util.Session.<init>(Session.java:38) ~[bbs.class:?]
at net.minecraft.client.main.Main.main(SourceFile:128) ~[Main.class:?]
... 6 more
Caused by: java.lang.IncompatibleClassChangeError: Implementing class
at java.lang.ClassLoader.defineClass1(Native Method) ~[?:1.7.0_11]
at java.lang.ClassLoader.defineClass(Unknown Source) ~[?:1.7.0_11]
at java.security.SecureClassLoader.defineClass(Unknown Source) ~[?:1.7.0_11]
at net.minecraft.launchwrapper.LaunchClassLoader.findClass(LaunchClassLoader.java:180) ~[launchwrapper-1.9.jar:?]
at java.lang.ClassLoader.loadClass(Unknown Source) ~[?:1.7.0_11]
at java.lang.ClassLoader.loadClass(Unknown Source) ~[?:1.7.0_11]
at net.minecraft.util.Session.<init>(Session.java:38) ~[bbs.class:?]
at net.minecraft.client.main.Main.main(SourceFile:128) ~[Main.class:?]
... 6 more
i installed it with windows installer and i have no mods installed