Any display block will make you crash:
java.lang.NullPointerException at org.schema.game.client.view.textbox.AbstractTextBox.draw(AbstractTextBox.java:310) at org.schema.game.client.view.SegmentDrawer.drawTextBoxes(SegmentDrawer.java:1794) at org.schema.game.client.view.WorldDrawer.draw(WorldDrawer.java:424) at org.schema.game.client.view.MainGameGraphics.drawScene(MainGameGraphics.java:573) at org.schema.game.client.view.MainGameGraphics.framebufferPass(MainGameGraphics.java:746) at org.schema.game.client.view.MainGameGraphics.draw(MainGameGraphics.java:453) at org.schema.schine.graphicsengine.core.GLFrame.draw(GLFrame.java:504) at org.schema.schine.graphicsengine.core.GLFrame.render(GLFrame.java:549) at org.schema.schine.graphicsengine.core.GLFrame.doFrameAndUpdate(GLFrame.java:691) at org.schema.schine.graphicsengine.core.GraphicsContext.mainLoop(GraphicsContext.java:857) at org.schema.schine.graphicsengine.core.GraphicsContext.startUp(GraphicsContext.java:754) at org.schema.game.client.controller.GameMainMenuController.startGraphics(GameMainMenuController.java:1157) at org.schema.game.common.Starter.startMainMenu(Starter.java:1459) at org.schema.game.common.Starter.main(Starter.java:1003)