java.lang.UnsupportedOperationException: Project in C:\ariba\ond\platform\R3\ui\aribaweb of class org.netbeans.modules.maven.NbMavenProjectImpl has a ProjectClassPathModifierImplementation but it will not handle classpath/compile for C:\ariba\ond\platform\R3\ui\aribaweb extensible source groups: 
   at org.netbeans.api.java.project.classpath.ProjectClassPathModifier.findExtensible(ProjectClassPathModifier.java:386)
   at org.netbeans.api.java.project.classpath.ProjectClassPathModifier.addAntArtifacts(ProjectClassPathModifier.java:277)
   at org.netbeans.modules.projectimport.eclipse.core.spi.ProjectFactorySupport.addItemToClassPath(ProjectFactorySupport.java:318)
   at org.netbeans.modules.projectimport.eclipse.core.spi.ProjectFactorySupport.updateProjectClassPath(ProjectFactorySupport.java:111)
   at org.netbeans.modules.projectimport.eclipse.j2se.J2SEProjectFactory.createProject(J2SEProjectFactory.java:138)
   at org.netbeans.modules.projectimport.eclipse.core.Importer.importProjectStage1(Importer.java:236)
   at org.netbeans.modules.projectimport.eclipse.core.Importer.access$600(Importer.java:72)
   at org.netbeans.modules.projectimport.eclipse.core.Importer$3.run(Importer.java:181)
   at org.netbeans.modules.projectimport.eclipse.core.Importer$3.run(Importer.java:178)
   at org.openide.util.Mutex.writeAccess(Mutex.java:404)
   at org.netbeans.modules.projectimport.eclipse.core.Importer.importProject(Importer.java:178)
   at org.netbeans.modules.projectimport.eclipse.core.Importer.access$200(Importer.java:72)
   at org.netbeans.modules.projectimport.eclipse.core.Importer$1.run(Importer.java:111)
   at org.openide.util.RequestProcessor$Task.run(RequestProcessor.java:1423)
   at org.openide.util.RequestProcessor$Processor.run(RequestProcessor.java:2033)