Invalid signature file digest for Manifest main attributes

[arsen3d]

imac5k2015:target arsen$ java -jar TMChat-0.0.1-SNAPSHOT.jar user1 
Error: A JNI error has occurred, please check your installation and try again
Exception in thread "main" java.lang.SecurityException: Invalid signature file digest for Manifest main attributes
	at sun.security.util.SignatureFileVerifier.processImpl(SignatureFileVerifier.java:314)
	at sun.security.util.SignatureFileVerifier.process(SignatureFileVerifier.java:268)
	at java.util.jar.JarVerifier.processEntry(JarVerifier.java:316)
	at java.util.jar.JarVerifier.update(JarVerifier.java:228)
	at java.util.jar.JarFile.initializeVerifier(JarFile.java:383)
	at java.util.jar.JarFile.getInputStream(JarFile.java:450)
	at sun.misc.URLClassPath$JarLoader$2.getInputStream(URLClassPath.java:977)
	at sun.misc.Resource.cachedInputStream(Resource.java:77)
	at sun.misc.Resource.getByteBuffer(Resource.java:160)
	at java.net.URLClassLoader.defineClass(URLClassLoader.java:454)
	at java.net.URLClassLoader.access$100(URLClassLoader.java:73)
	at java.net.URLClassLoader$1.run(URLClassLoader.java:368)
	at java.net.URLClassLoader$1.run(URLClassLoader.java:362)
	at java.security.AccessController.doPrivileged(Native Method)
	at java.net.URLClassLoader.findClass(URLClassLoader.java:361)
	at java.lang.ClassLoader.loadClass(ClassLoader.java:424)
	at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:335)
	at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
	at sun.launcher.LauncherHelper.checkAndLoadMain(LauncherHelper.java:495)
imac5k2015:target arsen$ java -jar original-TMChat-0.0.1-SNAPSHOT.jar 

[wolfposd]

this occurs when bouncycastle is packaged within the fat-jar

i should probably exclude it from the shade plugin