NullPointerException from component selection dialog
java.lang.NullPointerException: null
at org.simantics.plant3d.dialog.ComponentSelectionDialog.createDialogArea(ComponentSelectionDialog.java:450)
at org.eclipse.jface.dialogs.Dialog.createContents(Dialog.java:767)
at org.eclipse.jface.window.Window.create(Window.java:431)
at org.eclipse.jface.dialogs.Dialog.create(Dialog.java:1094)
at org.eclipse.jface.window.Window.open(Window.java:788)