sync core works except for simultaneous changes;
that will cause CcnxOperationException in CcnxWrapper;
this is suspicious, not related to sync core's logic
diff --git a/src/ccnx-wrapper.cpp b/src/ccnx-wrapper.cpp
index c818cd2..5580b03 100644
--- a/src/ccnx-wrapper.cpp
+++ b/src/ccnx-wrapper.cpp
@@ -105,6 +105,7 @@
         catch (CcnxOperationException &e)
         {
           // do not try reconnect for now
+          cout << *get_error_info<errmsg_info_str> (e) << endl;
           throw e;
           /*
           m_connected = false;