When I'm building on the Obsolescent Course...

[Dignity]

java.lang.NullPointerException
org.jbox2d.dynamics.a.j.a(ContactSolver.java:84)
org.jbox2d.dynamics.Island.a(Island.java:177)
org.jbox2d.dynamics.PhysicsWorld.a(PhysicsWorld.java:572)
net.buildism.ag.r(World.java:750)
net.buildism.i.f(Game.java:264)
net.buildism.n.p(Main.java:648)
net.buildism.MainApplet.run(MainApplet.java:235)
java.lang.Thread.run(Unknown Source)

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EDIT: It appears to be my script, nvm.
YOU NEED ERROR HANDLING FOR _G, JACOB!