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[18:34:37] [main/INFO]: Loading tweak class name net.minecraft.launchwrapper.VanillaTweaker[18:34:37] [main/INFO]: Loading tweak class name net.minecraft.launchwrapper.VanillaTweaker[18:34:37] [main/INFO]: Using primary tweak class name net.minecraft.launchwrapper.VanillaTweaker[18:34:37] [main/INFO]: Calling tweak class net.minecraft.launchwrapper.VanillaTweakerException in thread "main" java.lang.NoClassDefFoundError: org/objectweb/asm/ClassVisitor at java.lang.Class.getDeclaredConstructors0(Native Method) at java.lang.Class.privateGetDeclaredConstructors(Unknown Source) at java.lang.Class.getConstructor0(Unknown Source) at java.lang.Class.newInstance(Unknown Source) at net.minecraft.launchwrapper.LaunchClassLoader.registerTransformer(LaunchClassLoader.java:88) at net.minecraft.launchwrapper.VanillaTweaker.injectIntoClassLoader(VanillaTweaker.java:16) at net.minecraft.launchwrapper.Launch.launch(Launch.java:115) at net.minecraft.launchwrapper.Launch.main(Launch.java:28)Caused by: java.lang.ClassNotFoundException: org.objectweb.asm.ClassVisitor at java.net.URLClassLoader.findClass(Unknown Source) at java.lang.ClassLoader.loadClass(Unknown Source) at sun.misc.Launcher$AppClassLoader.loadClass(Unknown Source) at java.lang.ClassLoader.loadClass(Unknown Source) ... 8 moreJava HotSpot(TM) 64-Bit Server VM warning: Using incremental CMS is deprecated and will likely be removed in a future release

I just download optifine and shaders. When I run minecraft first time, it was normal. But after run this again, it crash like that. What is problem?

Post the full crash log at pastebin.com