Great (amazing) news
I just tested MathDrag'n on a Linux box with Mathematica installed, and
it worked absolutely correctly first try. The tester found it
quite usable, and checked all sorts of things that I've done. I
must say, I was simply floored! With all the trouble I'd gone to
with the OSX, I was certain I'd have all sorts of problems with Linux,
but noooooo---pure perfection. How it did it, I'll never know,
but it seems to me that my choice of Java as a platform is beginning to
pay off in terms of WORE (Write Once, Run Everywhere).

Reader Comments (2)
Here's the command I entered, and the result.
joal@littlesister:~/Source/Mathematics/MathDragn$ java -jar MathDragn.jar
Exception in thread "main" java.lang.UnsupportedClassVersionError: AlgebraManipulator/LocalClassLoader (Unsupported major.minor version 49.0)
at java.lang.ClassLoader.defineClass0(Native Method)
at java.lang.ClassLoader.defineClass(ClassLoader.java:539)
at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:123)
at java.net.URLClassLoader.defineClass(URLClassLoader.java:251)
at java.net.URLClassLoader.access$100(URLClassLoader.java:55)
at java.net.URLClassLoader$1.run(URLClassLoader.java:194)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(URLClassLoader.java:187)
at java.lang.ClassLoader.loadClass(ClassLoader.java:289)
at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:274)
at java.lang.ClassLoader.loadClass(ClassLoader.java:235)
at java.lang.ClassLoader.loadClassInternal(ClassLoader.java:302)
Any idea what I'm doing wrong?