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Peyman, Please give us more information about what you were doing when you ran into this error. Best Wishes, Unidata IDV Support > Full Name: peyman > Email Address: address@hidden > Organization: RESEARCH > Package Version: 4.1 build date:2013-08-02 18:38 UTC > Operating System: Windows 8 > Hardware: Java: home: C:\Program Files (x86)\IDV_4.1\jre version: 1.6.0_43 > j3d:1.5.2 fcs (build4) > Description of problem: There was an error loading the data: > java.lang.NullPointerException > > ****************** > Stack trace: > java.lang.NullPointerException > at visad.Tuple.buildTupleType(Tuple.java:170) > at > ucar.unidata.data.point.TextPointDataSource.makePointObs(TextPointDataSource.java:2106) > at > ucar.unidata.data.point.TextPointDataSource.makeObs(TextPointDataSource.java:656) > at > ucar.unidata.data.point.TextPointDataSource.makeObs(TextPointDataSource.java:479) > at > ucar.unidata.data.point.TextPointDataSource.getSample(TextPointDataSource.java:2520) > at > ucar.unidata.data.point.PointDataSource.doMakeDataChoices(PointDataSource.java:960) > at > ucar.unidata.data.point.TextPointDataSource.doMakeDataChoices(TextPointDataSource.java:2528) > at ucar.unidata.data.DataSourceImpl.getDataChoices(DataSourceImpl.java:1852) > at ucar.unidata.data.DataManager.createDataSource(DataManager.java:1599) > at > ucar.unidata.idv.IntegratedDataViewer.createDataSource(IntegratedDataViewer.java:1980) > at > ucar.unidata.idv.IntegratedDataViewer.makeDataSource(IntegratedDataViewer.java:1897) > at > ucar.unidata.idv.IntegratedDataViewer.makeDataSource(IntegratedDataViewer.java:1831) > at > ucar.unidata.idv.IntegratedDataViewer.makeDataSource(IntegratedDataViewer.java:1804) > at ucar.unidata.idv.chooser.IdvChooser.makeDataSource(IdvChooser.java:943) > at ucar.unidata.idv.chooser.FileChooser.selectFilesInner(FileChooser.java:656) > at ucar.unidata.idv.chooser.FileChooser.selectFiles(FileChooser.java:525) > at ucar.unidata.idv.chooser.FileChooser.doLoadInThread(FileChooser.java:547) > at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) > at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source) > at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source) > at java.lang.reflect.Method.invoke(Unknown Source) > at ucar.unidata.util.Misc$2.run(Misc.java:1223) > at ucar.unidata.util.Misc$3.run(Misc.java:1251) > > > Ticket Details =================== Ticket ID: OMO-228120 Department: Support IDV Priority: Normal Status: Closed