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Roman, Please upload your data file to http://motherlode.ucar.edu/repository/alias/idvupload Another thing you may try is to move (or remove) your \Users\<username>\.unidata directory. There may be a problem therein. Best, Unidata IDV Support > Full Name: Roman > Email Address: address@hidden > Organization: KGTU > Package Version: 5.2 build date:2015-08-26 18:19 UTC > Operating System: Windows 7 > Hardware: Java: home: C:\Program Files\IDV_5.2\jre version: 1.8.0_45 > j3d:1.6.0-pre9-daily-experimental daily > Description of problem: > > Creating display: Vector Plan View > java.lang.NullPointerException > > when building [true Wind vectors from U &V] from netCDF file. > > In 5.1 working but 5.2 has an error > > > ****************** > Stack trace: > java.lang.NullPointerException > at org.python.core.PyModule.module___init__(PyModule.java:64) > at org.python.core.PyModule.<init>(PyModule.java:47) > at org.python.util.PythonInterpreter.<init>(PythonInterpreter.java:112) > at org.python.util.PythonInterpreter.<init>(PythonInterpreter.java:94) > at org.python.util.PythonInterpreter.<init>(PythonInterpreter.java:71) > at ucar.unidata.idv.JythonManager.createInterpreter(JythonManager.java:1115) > at > ucar.unidata.idv.JythonManager.getDerivedDataInterpreter(JythonManager.java:2190) > at ucar.unidata.data.DerivedDataChoice.getData(DerivedDataChoice.java:764) > at ucar.unidata.data.DataChoice.getData(DataChoice.java:637) > at ucar.unidata.data.DataInstance.getData(DataInstance.java:243) > at ucar.unidata.data.DataInstance.getData(DataInstance.java:207) > at ucar.unidata.data.grid.GridDataInstance.init(GridDataInstance.java:206) > at ucar.unidata.data.grid.GridDataInstance.<init>(GridDataInstance.java:163) > at ucar.unidata.data.grid.GridDataInstance.<init>(GridDataInstance.java:144) > at > ucar.unidata.idv.control.GridDisplayControl.doMakeDataInstance(GridDisplayControl.java:293) > at > ucar.unidata.idv.control.DisplayControlImpl.initializeDataInstance(DisplayControlImpl.java:3278) > at > ucar.unidata.idv.control.DisplayControlImpl.setData(DisplayControlImpl.java:3234) > at ucar.unidata.idv.control.PlanViewControl.setData(PlanViewControl.java:664) > at > ucar.unidata.idv.control.FlowPlanViewControl.setData(FlowPlanViewControl.java:275) > at ucar.unidata.idv.control.PlanViewControl.init(PlanViewControl.java:489) > at > ucar.unidata.idv.control.DisplayControlImpl.init(DisplayControlImpl.java:1402) > at > ucar.unidata.idv.control.DisplayControlImpl.init(DisplayControlImpl.java:1085) > at ucar.unidata.idv.ControlDescriptor.initControl(ControlDescriptor.java:986) > at ucar.unidata.idv.ControlDescriptor$1.run(ControlDescriptor.java:911) > at ucar.unidata.util.Misc$3.run(Misc.java:1243) > > > Ticket Details =================== Ticket ID: PNT-327221 Department: Support IDV Priority: Normal Status: Closed