java.lang.UnsupportedOperationException: beginDragWithFiles, resources/file-for-drop-with-file-paths.html. at com.sun.javafx.webkit.drt.EventSender.beginDragWithFiles(EventSender.java:314) at com.sun.webkit.network.URLLoader.twkDidFinishLoading(Native Method) at com.sun.webkit.network.URLLoader.notifyDidFinishLoading(URLLoader.java:816) at com.sun.webkit.network.URLLoader.access$1200(URLLoader.java:44) at com.sun.webkit.network.URLLoader$6.run(URLLoader.java:806) at com.sun.glass.ui.win.WinApplication._runLoop(Native Method) at com.sun.glass.ui.win.WinApplication.access$100(Unknown Source) at com.sun.glass.ui.win.WinApplication$3$1.run(Unknown Source) at java.lang.Thread.run(Thread.java:722)