Hi everybody. I'm trying to display a 3d image (.3ds) and move it with mouse. I think the library MRI3DS can do this.
But when i tried to run the example in the library folder i had this error " SecurityException: Invalid signature file digest for Manifest main attributes".
Exception in thread "main" java.lang.SecurityException: Invalid signature file digest for Manifest main attributes
    at sun.security.util.SignatureFileVerifier.processImpl(SignatureFileVerifier.java:221)
    at sun.security.util.SignatureFileVerifier.process(SignatureFileVerifier.java:176)
    at java.util.jar.JarVerifier.processEntry(JarVerifier.java:233)
    at java.util.jar.JarVerifier.update(JarVerifier.java:188)
    at java.util.jar.JarFile.initializeVerifier(JarFile.java:325)
    at java.util.jar.JarFile.getInputStream(JarFile.java:390)
    at sun.misc.URLClassPath$JarLoader$1.getInputStream(URLClassPath.java:620)
    at sun.misc.Resource.cachedInputStream(Resource.java:58)
    at sun.misc.Resource.getByteBuffer(Resource.java:113)
    at java.net.URLClassLoader.defineClass(URLClassLoader.java:249)
    at java.net.URLClassLoader.access$100(URLClassLoader.java:56)
    at java.net.URLClassLoader$1.run(URLClassLoader.java:195)
    at java.security.AccessController.doPrivileged(Native Method)
    at java.net.URLClassLoader.findClass(URLClassLoader.java:188)
    at java.lang.ClassLoader.loadClass(ClassLoader.java:306)
    at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:268)
    at java.lang.ClassLoader.loadClass(ClassLoader.java:251)
    at java.lang.ClassLoader.loadClassInternal(ClassLoader.java:319)

Someone can help me to understand how to solve it?
Thanks