This archive contains answers to questions sent to Unidata support through mid-2025. Note that the archive is no longer being updated. We provide the archive for reference; many of the answers presented here remain technically correct, even if somewhat outdated. For the most up-to-date information on the use of NSF Unidata software and data services, please consult the Software Documentation first.
> Full Name: Madan Mohan Mahanty > Email Address: address@hidden > Organization: NIOT > Package Version: 2.9u3 build date:2011-01-14 00:05 UTC > Operating System: Windows XP > Hardware: Java: home: C:\Program Files\IDV_2.9u3\jre version: 1.6.0_20 > j3d:1.5.2 fcs (build4) > Description of problem: Processing data source > ucar.unidata.apps.nacp.NacpTreeDataSource > Hi Madan, It looks like you are loading a dataset which needs a special plugin, and this plugin is not installed in your IDV. Use Tools > Plugin Manager > Data Sources and add the NACP plugin. Let me know if this doesn't help. Yuan > ****************** > Stack trace: > java.lang.ClassNotFoundException: ucar.unidata.apps.nacp.NacpTreeDataSource > at java.net.URLClassLoader$1.run(Unknown Source) > at java.security.AccessController.doPrivileged(Native Method) > at java.net.URLClassLoader.findClass(Unknown Source) > at java.lang.ClassLoader.loadClass(Unknown Source) > at sun.misc.Launcher$AppClassLoader.loadClass(Unknown Source) > at java.lang.ClassLoader.loadClass(Unknown Source) > at java.lang.Class.forName0(Native Method) > at java.lang.Class.forName(Unknown Source) > at ucar.unidata.util.Misc.findClass(Misc.java:3966) > at ucar.unidata.data.DataManager.processDataSourceXml(DataManager.java:817) > at ucar.unidata.data.DataManager.loadDataSourceXml(DataManager.java:614) > at ucar.unidata.data.DataManager.initResources(DataManager.java:303) > at ucar.unidata.idv.StateManager.initState(StateManager.java:495) > at ucar.unidata.idv.IntegratedDataViewer.<init>(IntegratedDataViewer.java:324) > at ucar.unidata.idv.IntegratedDataViewer.<init>(IntegratedDataViewer.java:243) > at ucar.unidata.idv.DefaultIdv.<init>(DefaultIdv.java:84) > at ucar.unidata.idv.DefaultIdv.main(DefaultIdv.java:165) > > > Ticket Details =================== Ticket ID: GCN-145115 Department: Support IDV Priority: Normal Status: Closed