Slick Error: NoClassDefFoundError (FIXED)

Newbie & Debugging Questions
#1

Hi, I moved my game over to using Swing to render, and now I get this error when I compile;


run:
Exception in thread "main" java.lang.NoClassDefFoundError: org/lwjgl/LWJGLException
        at isogameengine_01.Main.main(Main.java:24)
Caused by: java.lang.ClassNotFoundException: org.lwjgl.LWJGLException
        at java.net.URLClassLoader$1.run(URLClassLoader.java:202)
        at java.security.AccessController.doPrivileged(Native Method)
        at java.net.URLClassLoader.findClass(URLClassLoader.java:190)
        at java.lang.ClassLoader.loadClass(ClassLoader.java:307)
        at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:301)
        at java.lang.ClassLoader.loadClass(ClassLoader.java:248)
        ... 1 more
Java Result: 1

Has anyone come across this before?

Chears guys,
Matt

Edit: I think it might be something really dumb - like I am missing a library or something.

EditEdit: Sorry, ignore this. I’d moved my project files and librarys over to my work server, and forgotten to add the LWJGL jars.

DERP