I know this is an extremely common problem, but I've followed all the instructions I can find for setting up Slick, which consists of this:
1. Create a new project
2. Add lwjgl.jar and slick.jar to build path (I also added slick-util.jar)
3. Add the natives under lwjgl.jar in the build path
Here's a screenshot http://imgur.com/umOlH showing that I have indeed done all this, and you can see the error I'm still getting for some reason below it. Have I done anything wrong or forgotten anything?