Monday, January 14, 2019

[pcgen] Mac OS Java Errors

Could use some help trying to get the software to run on my Mac.

So far, I have been unable to get a console window for Java. From what I've been able to determine, it doesn't show on the Mac unless a Java program is already running, which makes checking the Java console problematic if you can't get the program in question to run.

BUT....

I was able to finally figure out how to try and start it from the Terminal Command line and get some feedback:

I am running Java 8 update 191. Attempting to run the pcgen.jar I get the 

Error: A JNI error has occurred, please check your installation and try again

Exception in thread "main" java.lang.UnsupportedClassVersionError: pcgen/system/Main has been compiled by a more recent version of the Java Runtime (class file version 55.0), this version of the Java Runtime only recognizes class file versions up to 52.0

at java.lang.ClassLoader.defineClass1(Native Method)

at java.lang.ClassLoader.defineClass(ClassLoader.java:763)

at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:142)

at java.net.URLClassLoader.defineClass(URLClassLoader.java:467)

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:349)

at java.lang.ClassLoader.loadClass(ClassLoader.java:357)

at sun.launcher.LauncherHelper.checkAndLoadMain(LauncherHelper.java:495)

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