Exception in thread "main" java.lang.SecurityException: SHA1 digest error for net/minecraft/client/Minecraft.class
	at sun.security.util.ManifestEntryVerifier.verify(ManifestEntryVerifier.java:220)
	at java.util.jar.JarVerifier.processEntry(JarVerifier.java:229)
	at java.util.jar.JarVerifier.update(JarVerifier.java:216)
	at java.util.jar.JarVerifier$VerifierStream.read(JarVerifier.java:471)
	at sun.misc.Resource.getBytes(Resource.java:124)
	at java.net.URLClassLoader.defineClass(URLClassLoader.java:444)
	at java.net.URLClassLoader.access$100(URLClassLoader.java:71)
	at java.net.URLClassLoader$1.run(URLClassLoader.java:361)
	at java.net.URLClassLoader$1.run(URLClassLoader.java:355)
	at java.security.AccessController.doPrivileged(Native Method)
	at java.net.URLClassLoader.findClass(URLClassLoader.java:354)
	at java.lang.ClassLoader.loadClass(ClassLoader.java:423)
	at java.lang.ClassLoader.loadClass(ClassLoader.java:356)
	at net.minecraft.Launcher.<init>(Launcher.java:44)
	at org.smbarbour.mcu.MinecraftFrame.launch(MinecraftFrame.java:76)
	at org.smbarbour.mcu.MinecraftFrame.main(MinecraftFrame.java:49)