java.lang.IllegalStateException: This operation is permitted on the event thread only; currentThread = QuantumRenderer-0
at com.sun.glass.ui.Application.checkEventThread(Application.java:388)
at com.sun.glass.ui.Pixels.getPixels(Pixels.java:149)
at com.sun.javafx.tk.quantum.EmbeddedState.uploadPixels(EmbeddedState.java:54)
at com.sun.javafx.tk.quantum.UploadingPainter.run(UploadingPainter.java:159)
at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:471)
at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:304)
at com.sun.javafx.tk.RenderJob.run(RenderJob.java:58)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
at com.sun.javafx.tk.quantum.QuantumRenderer$PipelineRunnable.run(QuantumRenderer.java:129)
at java.lang.Thread.run(Thread.java:724)
java.lang.IllegalStateException: This operation is permitted on the event thread only; currentThread = QuantumRenderer-0
at com.sun.glass.ui.Application.checkEventThread(Application.java:388)
at com.sun.glass.ui.Pixels.getPixels(Pixels.java:149)