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Hi Daniel, The quarter degree GFS analysis grid has been absent from the IDD for some time. We are looking into why that is the case. You can probably find good substitutes such as the half degree analysis grid. 381 km GFS Northern Hemisphere grids have been discontinued. Again, you can probably find adequate substitutes here. For the grads file you are trying to access, you will have to give us more information about how you arrived at that error. Best, Unidata IDV Support > Full Name: Daniel Mejia > Email Address: address@hidden > Organization: Aeronautical Civil > Package Version: 5.3 build date:2016-05-23 19:17 UTC > Operating System: Windows 7 > Hardware: Java: home: C:\Program Files\IDV_5.3\jre version: 1.8.0_45 > j3d:1.6.0-pre9-daily-experimental daily > Description of problem: There was an error loading the data: > Error creating data source:file.grads with: file:gfs global onedeg 20161214 > 1200 > Unable to open grid: > file:gfs global onedeg 20161214 1200 > > > ****************** > Stack trace: > ucar.unidata.data.BadDataException: Error creating data source:file.grads > with: file:gfs global onedeg 20161214 1200 > Unable to open grid: > file:gfs global onedeg 20161214 1200 > > at ucar.unidata.data.DataManager.createDataSource(DataManager.java:1623) > 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.handleAction(IntegratedDataViewer.java:1672) > at ucar.unidata.idv.DefaultIdv.handleAction(DefaultIdv.java:99) > at > ucar.unidata.idv.IntegratedDataViewer.handleAction(IntegratedDataViewer.java:1604) > at > ucar.unidata.idv.control.TextDisplayControl$10.run(TextDisplayControl.java:1408) > at ucar.unidata.util.Misc$3.run(Misc.java:1243) > > > Ticket Details =================== Ticket ID: NQY-949909 Department: Support IDV Priority: Normal Status: Closed =================== NOTE: All email exchanges with Unidata User Support are recorded in the Unidata inquiry tracking system and then made publicly available through the web. If you do not want to have your interactions made available in this way, you must let us know in each email you send to us.