Java - Error java al navegar en una pag. WEB

No soy programador, solo un usario de la pag. MLB.COM. La consola de java muestra el siguiente error cuando intento navegar en un link.

Exception in thread "AWT-EventQueue-2" java.lang.Error: Couldn't launch FX Stage mlbscoreboard.Main
at com.sun.javafx.runtime.adapter.AppletStartupRoutine.run(Unknown Source)
at com.sun.javafx.tk.swing.SwingToolkit$StartupRoutine.run(Unknown Source)
at java.awt.event.InvocationEvent.dispatch(Unknown Source)
at java.awt.EventQueue.dispatchEvent(Unknown Source)
at java.awt.EventDispatchThread.pumpOneEventForFilters(Unknown Source)
at java.awt.EventDispatchThread.pumpEventsForFilter(Unknown Source)
at java.awt.EventDispatchThread.pumpEventsForHierarchy(Unknown Source)
at java.awt.EventDispatchThread.pumpEvents(Unknown Source)
at java.awt.EventDispatchThread.pumpEvents(Unknown Source)
at java.awt.EventDispatchThread.run(Unknown Source)
Caused by: java.lang.NullPointerException
at mlbscoreboard.util.MLBLookups.getDateFromWeekDay(MLBLookups.java:402)
at mlbscoreboard.view.PlayerStatsView.parseMatchupForDate(PlayerStatsView.fx:577)
at mlbscoreboard.view.PlayerStatsView.set$matchup(PlayerStatsView.fx:65)
at mlbscoreboard.view.PlayerStatsView.getMatchupForWeek(PlayerStatsView.fx:547)
at mlbscoreboard.view.PlayerStatsView.getDefaultMatchup(PlayerStatsView.fx:531)
at mlbscoreboard.view.PlayerStatsView.userInit$(PlayerStatsView.fx:302)
at com.sun.javafx.runtime.FXBase.complete$(Unknown Source)
at mlbscoreboard.view.ScoreboardView.applyDefaults$(ScoreboardView.fx:55)
at mlbscoreboard.Main.javafx$run$(Main.fx:165)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
at java.lang.reflect.Method.invoke(Unknown Source)
... 10 more
Ayuda por favor