I started development on my project with LWJGL 2.5, and everything worked fine. However, I just updated the jars and native libraries to 2.6, and on startup I'm getting the following error:
Exception in thread "main" java.lang.UnsatisfiedLinkError: org.lwjgl.DefaultSysImplementation.getPointerSize()I
This happens when I try to set the parameters for the Display before it is created (Display.setFullscreen(true) or Display.setDisplayMode(new DisplayMode(width, height))).
Nevermind, I figured it out. It was a .dll problem after all.