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java.lang.NullPointerException: null	at org.terasology.rendering.nui.layers.mainMenu.SelectModulesScreen.setSelectedVersions(SelectModulesScreen.java:289)	at org.terasology.rendering.nui.layers.mainMenu.SelectModulesScreen.initialise(SelectModulesScreen.java:84)	at org.terasology.rendering.nui.CoreScreenLayer.onOpened(CoreScreenLayer.java:72)	at org.terasology.rendering.nui.internal.NUIManagerInternal.prepare(NUIManagerInternal.java:506)	at org.terasology.rendering.nui.internal.NUIManagerInternal.pushScreen(NUIManagerInternal.java:238)	at org.terasology.rendering.nui.internal.NUIManagerInternal.pushScreen(NUIManagerInternal.java:202)	at org.terasology.rendering.nui.internal.NUIManagerInternal.pushScreen(NUIManagerInternal.java:191)	at org.terasology.rendering.nui.layers.mainMenu.CreateGameScreen$9.onActivated(CreateGameScreen.java:217)	at org.terasology.rendering.nui.widgets.UIButton.activate(UIButton.java:138)	at org.terasology.rendering.nui.widgets.UIButton.access$100(UIButton.java:40)	at org.terasology.rendering.nui.widgets.UIButton$1.onMouseRelease(UIButton.java:81)	at org.terasology.rendering.nui.internal.CanvasImpl.processMouseRelease(CanvasImpl.java:226)	at org.terasology.rendering.nui.internal.NUIManagerInternal.mouseButtonEvent(NUIManagerInternal.java:425)	at org.terasology.rendering.nui.internal.NUIManagerInternalMethodAccess.invoke(Unknown Source)	at org.terasology.entitySystem.event.internal.EventSystemImpl$ByteCodeEventHandlerInfo.invoke(EventSystemImpl.java:497)	at org.terasology.entitySystem.event.internal.EventSystemImpl.sendConsumableEvent(EventSystemImpl.java:278)	at org.terasology.entitySystem.event.internal.EventSystemImpl.send(EventSystemImpl.java:257)	at org.terasology.entitySystem.entity.internal.BaseEntityRef.send(BaseEntityRef.java:166)	at org.terasology.input.InputSystem.sendMouseEvent(InputSystem.java:392)	at org.terasology.input.InputSystem.processMouseInput(InputSystem.java:247)	at org.terasology.input.InputSystem.update(InputSystem.java:204)	at org.terasology.engine.modes.StateMainMenu.handleInput(StateMainMenu.java:134)	at org.terasology.engine.subsystem.lwjgl.LwjglInput.postUpdate(LwjglInput.java:65)	at org.terasology.engine.TerasologyEngine.mainLoop(TerasologyEngine.java:445)	at org.terasology.engine.TerasologyEngine.run(TerasologyEngine.java:246)	at org.terasology.engine.Terasology.main(Terasology.java:90)	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)	at java.lang.reflect.Method.invoke(Method.java:601)	at com.intellij.rt.execution.application.AppMain.main(AppMain.java:120)