Exception in thread "main" java.lang.SecurityException: Invalid signature file digest for Manifest main attributes
	at sun.security.util.SignatureFileVerifier.processImpl(SignatureFileVerifier.java:240)
	at sun.security.util.SignatureFileVerifier.process(SignatureFileVerifier.java:193)
	at java.util.jar.JarVerifier.processEntry(JarVerifier.java:262)
	at java.util.jar.JarVerifier.update(JarVerifier.java:216)
	at java.util.jar.JarFile.initializeVerifier(JarFile.java:345)
	at java.util.jar.JarFile.getInputStream(JarFile.java:412)
	at sun.misc.URLClassPath$JarLoader$2.getInputStream(URLClassPath.java:752)
	at sun.misc.Resource.cachedInputStream(Resource.java:77)
	at sun.misc.Resource.getByteBuffer(Resource.java:160)
	at java.net.URLClassLoader.defineClass(URLClassLoader.java:436)
	at java.net.URLClassLoader.access$100(URLClassLoader.java:71)
	at java.net.URLClassLoader$1.run(URLClassLoader.java:361)
	at java.net.URLClassLoader$1.run(URLClassLoader.java:355)
	at java.security.AccessController.doPrivileged(Native Method)
	at java.net.URLClassLoader.findClass(URLClassLoader.java:354)
	at java.lang.ClassLoader.loadClass(ClassLoader.java:423)
	at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:308)
	at java.lang.ClassLoader.loadClass(ClassLoader.java:356)
	at sun.launcher.LauncherHelper.checkAndLoadMain(LauncherHelper.java:482)
josh@josh-TECRA-R840:~/Desktop/MineTweak Server$