The following exception occurs on startup:

Exception in Application init method
Exception in thread "main" java.lang.RuntimeException: Exception in Application init method
at com.sun.javafx.application.LauncherImpl.launchApplication1(LauncherImpl.java:543)
at com.sun.javafx.application.LauncherImpl.access$000(LauncherImpl.java:48)
at com.sun.javafx.application.LauncherImpl$1.run(LauncherImpl.java:134)
at java.lang.Thread.run(Thread.java:722)
Caused by: java.lang.ExceptionInInitializerError
at ensemble.generated.Samples.<clinit>(Samples.java:6)
at ensemble.EnsembleApp.init(EnsembleApp.java:227)
at com.sun.javafx.application.LauncherImpl.launchApplication1(LauncherImpl.java:468)
... 3 more
Caused by: java.lang.NullPointerException
at ensemble.SampleInfo.getImage(SampleInfo.java:347)
at ensemble.SampleInfo.<clinit>(SampleInfo.java:213)
... 6 more