java.util.Collections$UnmodifiableList at line 1316

[madhephaestusdemo]

Auto Reported Issue
BowlerStudio Build 1.0.9
BowlerKernel 0.52.1
JavaCad Version: 0.22.0
Java-Bowler Version: 3.28.0
Java Version: 1.8.0_232
JavaFX Version: 8.0.232

OS = Linux amd64 x64

java.lang.UnsupportedOperationException
	at java.util.Collections$UnmodifiableList.add(Collections.java:1316)
	at javafx.collections.ListChangeBuilder.nextRemove(ListChangeBuilder.java:208)
	at javafx.collections.ObservableListBase.nextRemove(ObservableListBase.java:150)
	at javafx.collections.ModifiableObservableListBase.remove(ModifiableObservableListBase.java:181)
	at javafx.collections.ModifiableObservableListBase.remove(ModifiableObservableListBase.java:171)
	at javafx.scene.control.Menu$6.onChanged(Menu.java:373)
	at com.sun.javafx.collections.TrackableObservableList.lambda$new$0(TrackableObservableList.java:45)
	at com.sun.javafx.collections.ListListenerHelper$SingleChange.fireValueChangedEvent(ListListenerHelper.java:164)
	at com.sun.javafx.collections.ListListenerHelper.fireValueChangedEvent(ListListenerHelper.java:73)
	at javafx.collections.ObservableListBase.fireChange(ObservableListBase.java:233)
	at javafx.collections.ListChangeBuilder.commit(ListChangeBuilder.java:482)
	at javafx.collections.ListChangeBuilder.endChange(ListChangeBuilder.java:541)
	at javafx.collections.ObservableListBase.endChange(ObservableListBase.java:205)
	at javafx.collections.ModifiableObservableListBase.add(ModifiableObservableListBase.java:155)
	at java.util.AbstractList.add(AbstractList.java:108)
	at com.neuronrobotics.bowlerstudio.BowlerStudioMenu.lambda$6(BowlerStudioMenu.java:763)
	at com.sun.javafx.application.PlatformImpl.lambda$null$5(PlatformImpl.java:295)
	at java.security.AccessController.doPrivileged(Native Method)
	at com.sun.javafx.application.PlatformImpl.lambda$runLater$6(PlatformImpl.java:294)
	at com.sun.glass.ui.InvokeLaterDispatcher$Future.run(InvokeLaterDispatcher.java:95)
	at com.sun.glass.ui.gtk.GtkApplication._runLoop(Native Method)
	at com.sun.glass.ui.gtk.GtkApplication.lambda$null$10(GtkApplication.java:245)
	at java.lang.Thread.run(Thread.java:748)