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Professor, Fortunately, in this case, the solution is very simple. Please download and install the latest version of the IDV (5.2). http://www.unidata.ucar.edu/downloads/idv/current/index.jsp Best, Unidata IDV Support > Full Name: Chris Herbster > Email Address: address@hidden > Organization: Embry-Riddle Aeronautical University > Package Version: 5.1u2 build date:2015-04-27 16:07 UTC > Operating System: Linux > Hardware: Java: home: /opt/wxapps/idv/IDV_5.1u2/IDV_5.1u2_x64/jre version: > 1.7.0_51 j3d:1.6.0-pre9-daily-experimental daily > Description of problem: There was an error loading the data: > Error creating data source:file.grid with: > /storage/wxdata/NCEP_NARR/NARR_monthly/narrmon-a_221_20010101_0000_000.grb > Grid data source failed making data set: > /storage/wxdata/NCEP_NARR/NARR_monthly/narrmon-a_221_20010101_0000_000.grb > PDS: Unknown Time Range Indicator 129 > > --- > The above text came from the IDV "report form" .... > > The data file that gave this error can be found at: > ftp://nomads.ncdc.noaa.gov/NARR_monthly/200101/20010101/narrmon-a_221_20010101_0000_000.grb > > These data represent monthly averages. There is one time per file, and the > files are available every three hours. > > Thanks in advance for any help. > > Chris Herbster > -- > > Dr. Christopher G. Herbster > Associate Professor > Director of Science and Technology > for the ERAU Weather Center > Applied Aviation Sciences > Embry-Riddle Aeronautical Univ. > 600 S. Clyde Morris Blvd. > Daytona Beach, FL 32114-3900 > > 386.226.6444 Office > 386.226.6446 Weather Center > http://wx.erau.edu/ > > Schedule at: http://wx.erau.edu/faculty/herbster/Schedules/ > > > ****************** > Stack trace: > java.lang.IllegalArgumentException: PDS: Unknown Time Range Indicator 129 > at ucar.nc2.grib.grib1.Grib1ParamTime.<init>(Grib1ParamTime.java:262) > at > ucar.nc2.grib.grib1.Grib1SectionProductDefinition.getParamTime(Grib1SectionProductDefinition.java:325) > at > ucar.nc2.grib.collection.Grib1CollectionBuilder.cdmVariableHash(Grib1CollectionBuilder.java:387) > at > ucar.nc2.grib.collection.Grib1CollectionBuilder.cdmVariableHash(Grib1CollectionBuilder.java:353) > at > ucar.nc2.grib.collection.Grib1CollectionBuilder.access$200(Grib1CollectionBuilder.java:62) > at > ucar.nc2.grib.collection.Grib1CollectionBuilder$Grib1Rectilyser.make(Grib1CollectionBuilder.java:262) > at > ucar.nc2.grib.collection.Grib1CollectionBuilder.makeGroups(Grib1CollectionBuilder.java:164) > at > ucar.nc2.grib.collection.GribCollectionBuilder.createIndex(GribCollectionBuilder.java:153) > at > ucar.nc2.grib.collection.GribCdmIndex.openGribCollectionFromDataFile(GribCdmIndex.java:643) > at > ucar.nc2.grib.collection.GribCdmIndex.openGribCollectionFromDataFile(GribCdmIndex.java:630) > at > ucar.nc2.grib.collection.GribCdmIndex.makeGribCollectionFromRaf(GribCdmIndex.java:599) > at ucar.nc2.grib.collection.GribIosp.open(GribIosp.java:188) > at ucar.nc2.NetcdfFile.<init>(NetcdfFile.java:1531) > at ucar.nc2.NetcdfFile.open(NetcdfFile.java:821) > at ucar.nc2.NetcdfFile.open(NetcdfFile.java:428) > at ucar.nc2.dataset.NetcdfDataset.openOrAcquireFile(NetcdfDataset.java:744) > at ucar.nc2.dataset.NetcdfDataset.openDataset(NetcdfDataset.java:428) > at ucar.nc2.dataset.NetcdfDataset.acquireDataset(NetcdfDataset.java:529) > at ucar.nc2.dt.grid.GridDataset.open(GridDataset.java:117) > at ucar.nc2.dt.grid.GridDataset.open(GridDataset.java:103) > at > ucar.unidata.data.grid.GeoGridDataSource.doMakeDataSet(GeoGridDataSource.java:1186) > at > ucar.unidata.data.grid.GeoGridDataSource.getDataset(GeoGridDataSource.java:1208) > at > ucar.unidata.data.grid.GeoGridDataSource.initAfterCreation(GeoGridDataSource.java:511) > at ucar.unidata.data.DataManager.createDataSource(DataManager.java:1572) > at > ucar.unidata.idv.IntegratedDataViewer.createDataSource(IntegratedDataViewer.java:1979) > at > ucar.unidata.idv.IntegratedDataViewer.makeDataSource(IntegratedDataViewer.java:1896) > at > ucar.unidata.idv.IntegratedDataViewer.makeDataSource(IntegratedDataViewer.java:1830) > at > ucar.unidata.idv.IntegratedDataViewer.makeDataSource(IntegratedDataViewer.java:1803) > 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:1215) > at ucar.unidata.util.Misc$3.run(Misc.java:1243) > > > Ticket Details =================== Ticket ID: FWG-373708 Department: Support IDV Priority: Normal Status: Closed