Same with MilesParker's 2.5. I think I can safely blame my setup

Error loading LWJGL
java.lang.NullPointerException
at org.eclipse.core.internal.runtime.Activator.getURLConverter(Activator.java:313)
at org.eclipse.core.runtime.FileLocator.resolve(FileLocator.java:227)
at org.lwjgl.Activator.start(Activator.java:58)
at org.eclipse.osgi.framework.internal.core.BundleContextImpl$1.run(BundleContextImpl.java:783)
at java.security.AccessController.doPrivileged(Native Method)
at org.eclipse.osgi.framework.internal.core.BundleContextImpl.startActivator(BundleContextImpl.java:774)
...