diff --git a/model/sync-logic.cc b/model/sync-logic.cc
index 943126b..b72a061 100644
--- a/model/sync-logic.cc
+++ b/model/sync-logic.cc
@@ -29,6 +29,7 @@
 #include "sync-diff-leaf.h"
 #include "sync-full-leaf.h"
 #include "sync-log.h"
+#include "sync-state.h"
 
 #include <boost/make_shared.hpp>
 #include <boost/foreach.hpp>
@@ -278,10 +279,10 @@
 
       DiffState diff;
       SyncStateMsg msg;
-      if (!msg.parseFromArray(wireData, len) || !msg.IsInitialized()) 
+      if (!msg.ParseFromArray(wireData, len) || !msg.IsInitialized()) 
       {
         //Throw
-        BOOST_THROW_EXCEPTION (SyncStateMsgDecodingFailure () << info_str ("Can not decode data"));
+        BOOST_THROW_EXCEPTION (Error::SyncStateMsgDecodingFailure () );
       }
       msg >> diff;
 
@@ -526,11 +527,12 @@
   // sending
   SyncStateMsg ssm;
   ssm << (*state);
-  char *wireData = new char[ssm.size()];
-  ssm.SerializedToArray(wireData, ssm.size());
+  int size = ssm.ByteSize();
+  char *wireData = new char[size];
+  ssm.SerializeToArray(wireData, size);
   m_ccnxHandle->publishRawData (name,
                              wireData,
-                             ssm.size(),
+                             size,
                              m_syncResponseFreshness); // in NS-3 it doesn't have any effect... yet
   delete wireData;
 
diff --git a/model/sync-state.cc b/model/sync-state.cc
index 45a7ab7..137e8b0 100644
--- a/model/sync-state.cc
+++ b/model/sync-state.cc
@@ -74,9 +74,9 @@
 {
   BOOST_FOREACH (shared_ptr<const Leaf> leaf, state.getLeaves ().get<ordered> ())
   {
-    SyncState *oss = ossm->add_ss();
+    SyncState *oss = ossm.add_ss();
     shared_ptr<const DiffLeaf> diffLeaf = dynamic_pointer_cast<const DiffLeaf> (leaf);
-    if (diffLeaf != 0 && diffLeaf->getOperation != UPDATE)
+    if (diffLeaf != 0 && diffLeaf->getOperation() != UPDATE)
     {
       oss->set_type(SyncState::DELETE);
     }
@@ -91,10 +91,9 @@
 
     if (diffLeaf == 0 || (diffLeaf != 0 && diffLeaf->getOperation () == UPDATE))
     {
-      SyncState::SeqNo seqNo;
-      seqNo->set_session(leaf->getSeq()->getSession());
-      seqNo->set_seq(leaf->getSeq()->getSeq());
-      oss->set_seqNo(seqNo);
+      SyncState::SeqNo *seqNo = oss->mutable_seqno();
+      seqNo->set_session(leaf->getSeq().getSession());
+      seqNo->set_seq(leaf->getSeq().getSeq());
     }
   }
   return ossm;
@@ -150,7 +149,7 @@
 */
 
 SyncStateMsg &
-operator >> (SyncStateMsg &issm, const State &state)
+operator >> (SyncStateMsg &issm, State &state)
 {
   int n = issm.ss_size();
   for (int i = 0; i < n; i++)
@@ -159,10 +158,10 @@
     NameInfoConstPtr info = StdNameInfo::FindOrCreate (ss.name());
     if (ss.type() == SyncState::UPDATE)
     {
-      state.update(info, SeqNo(
-                                lexical_cast<uint32_t> (ss.seqNo().session()),
-                                lexical_cast<uint32_t> (ss.seqNo().seq()),
-                                ));
+      uint32_t session = lexical_cast<uint32_t>(ss.seqno().session());
+      uint32_t seq = lexical_cast<uint32_t>(ss.seqno().seq());
+      SeqNo seqNo(session, seq);
+      state.update(info, seqNo);
     }
     else
     {