Hello again- I found a similar file at: ftp://ftp.ncep.noaa.gov/pub/data/nccf/com/gfs/prod/sst.20100201/ I'm not sure what these files are, but they are not grib files which is one of the formats that the IDV will read. In the previous day's directory: ftp://ftp.ncep.noaa.gov/pub/data/nccf/com/gfs/prod/sst.20100131/ the IDV will read any of the grib2 files there. Don Murray > Full Name: vasanthakumar > Email Address: address@hidden > Organization: hrs > Package Version: 2.8 build date:2010-01-15 20:48 UTC > Operating System: Windows XP > Hardware: Java: home: C:\Program Files\IDV_2.8\jre version: 1.6.0_17 > j3d:1.5.2 fcs (build4) > Description of problem: There was an error loading the data: > Error creating data source:file.grid with: C:\WGRIB2\sst.t06z.nam_grid > Grid data source failed making data set: C:\WGRIB2\sst.t06z.nam_grid > Cant read C:/WGRIB2/sst.t06z.nam_grid: not a valid NetCDF file. > > ****************** > Stack trace: > java.io.IOException: Cant read C:/WGRIB2/sst.t06z.nam_grid: not a valid > NetCDF file. > at ucar.nc2.NetcdfFile.open(NetcdfFile.java:751) > at ucar.nc2.NetcdfFile.open(NetcdfFile.java:395) > at ucar.nc2.dataset.NetcdfDataset.openOrAcquireFile(NetcdfDataset.java:688) > at ucar.nc2.dataset.NetcdfDataset.openDataset(NetcdfDataset.java:434) > at ucar.nc2.dataset.NetcdfDataset.acquireDataset(NetcdfDataset.java:523) > at ucar.nc2.dt.grid.GridDataset.open(GridDataset.java:103) > at ucar.nc2.dt.grid.GridDataset.open(GridDataset.java:89) > at > ucar.unidata.data.grid.GeoGridDataSource.doMakeDataSet(GeoGridDataSource.java:1084) > at > ucar.unidata.data.grid.GeoGridDataSource.getDataset(GeoGridDataSource.java:1106) > at > ucar.unidata.data.grid.GeoGridDataSource.initAfterCreation(GeoGridDataSource.java:471) > at ucar.unidata.data.DataManager.createDataSource(DataManager.java:1565) > at > ucar.unidata.idv.IntegratedDataViewer.createDataSource(IntegratedDataViewer.java:1992) > at > ucar.unidata.idv.IntegratedDataViewer.makeDataSource(IntegratedDataViewer.java:1909) > at > ucar.unidata.idv.IntegratedDataViewer.makeDataSource(IntegratedDataViewer.java:1843) > at > ucar.unidata.idv.IntegratedDataViewer.makeDataSource(IntegratedDataViewer.java:1816) > at ucar.unidata.idv.chooser.IdvChooser.makeDataSource(IdvChooser.java:938) > at ucar.unidata.idv.chooser.FileChooser.selectFilesInner(FileChooser.java:648) > at ucar.unidata.idv.chooser.FileChooser.selectFiles(FileChooser.java:517) > at ucar.unidata.idv.chooser.FileChooser.doLoadInThread(FileChooser.java:539) > 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:1068) > at ucar.unidata.util.Misc$3.run(Misc.java:1096) > > > Ticket Details =================== Ticket ID: LBN-852592 Department: Support IDV Priority: Normal Status: Open