java.lang.Exception: Existing project unique name differ: <WRONG FILE> - expected /usr/include/c++/4.9/L/
   at org.netbeans.modules.cnd.utils.CndUtils.severe(CndUtils.java:206)
   at org.netbeans.modules.cnd.utils.CndUtils.assertTrue(CndUtils.java:191)
   at org.netbeans.modules.cnd.modelimpl.csm.core.ProjectBase.checkUniqueNameConsistency(ProjectBase.java:513)
   at org.netbeans.modules.cnd.modelimpl.csm.core.ProjectBase.write(ProjectBase.java:3595)
   at org.netbeans.modules.cnd.modelimpl.csm.core.LibProjectImpl.write(LibProjectImpl.java:197)
   at org.netbeans.modules.cnd.repository.support.AbstractObjectFactory.writeSelfPersistent(AbstractObjectFactory.java:69)
   at org.netbeans.modules.cnd.modelimpl.csm.core.CsmObjectFactory.write(CsmObjectFactory.java:610)
   at org.netbeans.modules.cnd.repository.AsyncRepositoryWriterImpl$Worker.doWrite(AsyncRepositoryWriterImpl.java:327)
   at org.netbeans.modules.cnd.repository.AsyncRepositoryWriterImpl$Worker.run(AsyncRepositoryWriterImpl.java:295)
   at org.openide.util.RequestProcessor$FixedRateTask.run(RequestProcessor.java:1207)
   at org.openide.util.RequestProcessor$Task.run(RequestProcessor.java:1443)
   at org.netbeans.modules.openide.util.GlobalLookup.execute(GlobalLookup.java:68)
   at org.openide.util.lookup.Lookups.executeWith(Lookups.java:303)
   at org.openide.util.RequestProcessor$Processor.run(RequestProcessor.java:2058)