Minecraft Forums

Couldn't connect to server (responded with 403) but have local file, assuming it's good
Job 'Version & Libraries' finished successfully
Launching game
Looking for old natives to clean up...
Unpacking natives to /Users/***/Library/Application Support/minecraft/versions/spc/spc-natives-1375153327851110000
Launching in /Users/***/Library/Application Support/minecraft
Running /System/Library/Java/JavaVirtualMachines/1.6.0.jdk/Contents/Home/bin/java -Xdock:icon=/Users/***/Library/Application Support/minecraft/assets/icons/minecraft.icns -Xdock:name=Minecraft -Xmx1G -Djava.library.path=/Users/***/Library/Application Support/minecraft/versions/spc/spc-natives-1375153327851110000 -cp /Users/***/Library/Application Support/minecraft/libraries/net/sf/jopt-simple/jopt-simple/4.5/jopt-simple-4.5.jar:/Users/***/Library/Application Support/minecraft/libraries/com/paulscode/codecjorbis/20101023/codecjorbis-20101023.jar:/Users/***/Library/Application Support/minecraft/libraries/com/paulscode/codecwav/20101023/codecwav-20101023.jar:/Users/***/Library/Application Support/minecraft/libraries/com/paulscode/libraryjavasound/20101123/libraryjavasound-20101123.jar:/Users/***/Library/Application Support/minecraft/libraries/com/paulscode/librarylwjglopenal/20100824/librarylwjglopenal-20100824.jar:/Users/***/Library/Application Support/minecraft/libraries/com/paulscode/soundsystem/20120107/soundsystem-20120107.jar:/Users/***/Library/Application Support/minecraft/libraries/argo/argo/2.25_fixed/argo-2.25_fixed.jar:/Users/***/Library/Application Support/minecraft/libraries/org/bouncycastle/bcprov-jdk15on/1.47/bcprov-jdk15on-1.47.jar:/Users/***/Library/Application Support/minecraft/libraries/com/google/guava/guava/14.0/guava-14.0.jar:/Users/***/Library/Application Support/minecraft/libraries/org/apache/commons/commons-lang3/3.1/commons-lang3-3.1.jar:/Users/***/Library/Application Support/minecraft/libraries/commons-io/commons-io/2.4/commons-io-2.4.jar:/Users//Library/Application Support/minecraft/libraries/net/java/jinput/jinput/2.0.5/jinput-2.0.5.jar:/Users/***/Library/Application Support/minecraft/libraries/net/java/jutils/jutils/1.0.0/jutils-1.0.0.jar:/Users/***/Library/Application Support/minecraft/libraries/com/google/code/gson/gson/2.2.2/gson-2.2.2.jar:/Users/***/Library/Application Support/minecraft/libraries/org/lwjgl/lwjgl/lwjgl/2.9.0/lwjgl-2.9.0.jar:/Users/***/Library/Application Support/minecraft/libraries/org/lwjgl/lwjgl/lwjgl_util/2.9.0/lwjgl_util-2.9.0.jar:/Users/***/Library/Application Support/minecraft/versions/spc/spc.jar net.minecraft.client.main.Main --username SovietReunion --session token:f8f9fceb85144900817b43eeb04eb9b5:1ee91db9bc0846c6a371941d3331dcd2 --version spc --gameDir /Users/***/Library/Application Support/minecraft --assetsDir /Users/***/Library/Application Support/minecraft/assets
Client> Exception in thread "main" java.lang.NoClassDefFoundError: net/minecraft/client/main/Main
Client> Caused by: java.lang.ClassNotFoundException: net.minecraft.client.main.Main
Client> at java.net.URLClassLoader$1.run(URLClassLoader.java:202)
Client> at java.security.AccessController.doPrivileged(Native Method)
Client> at java.net.URLClassLoader.findClass(URLClassLoader.java:190)
Client> at java.lang.ClassLoader.loadClass(ClassLoader.java:306)
Client> at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:301)
Client> at java.lang.ClassLoader.loadClass(ClassLoader.java:247)
Game ended with bad state (exit code 1)
Ignoring visibility rule and showing launcher due to a game crash
Deleting /Users/***/Library/Application Support/minecraft/versions/spc/spc-natives-1375153327851110000