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java.lang.NullPointerException: 	at com.sunopsis.dwg.reverse.Reverse.getMetaData(Reverse.java:1801)	at com.sunopsis.dwg.reverse.Reverse.getMetaData(Reverse.java:1882)	at com.sunopsis.graphical.frame.edit.EditFrameSnpModel$8.doInBackground(EditFrameSnpModel.java:2576)	at com.sunopsis.graphical.tools.utils.swingworker.SwingWorker$1.call(SwingWorker.java:240)	at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:334)	at java.util.concurrent.FutureTask.run(FutureTask.java:166)	at com.sunopsis.graphical.tools.utils.swingworker.SwingWorker.run(SwingWorker.java:278)	at oracle.ide.dialogs.ProgressBar.run(ProgressBar.java:655)	at java.lang.Thread.run(Thread.java:722)