java.lang.IllegalArgumentException: D:\projects\subversion\www\com\mysubversion\NewSubversionFile.java is not inside D:\projects\subversion\www
        at org.netbeans.spi.project.support.ant.SourcesHelper$SourceRoot$Group.contains(SourcesHelper.java:180)
        at org.netbeans.spi.java.project.support.ui.PackageViewChildren$NoFoldersDataFilter.acceptFileObject(PackageViewChildren.java:1160)
        at org.openide.loaders.FolderChildren$1R.run(FolderChildren.java:157)
        at org.openide.util.Mutex$1Exec.run(Mutex.java:1239)
        at org.openide.nodes.Children$ProjectManagerDeadlockDetector.execute(Children.java:1796)
        at org.openide.util.Mutex.postRequest(Mutex.java:1245)
        at org.openide.util.Mutex.postRequest(Mutex.java:1209)
        at org.openide.util.Mutex.postWriteRequest(Mutex.java:582)
        at org.openide.loaders.FolderChildren$1R.run(FolderChildren.java:139)
        at org.openide.util.RequestProcessor$Task.run(RequestProcessor.java:572)
        at org.openide.util.RequestProcessor$Processor.run(RequestProcessor.java:997)