diff --git a/src/cc/eval.h b/src/cc/eval.h
index 4bcdd5617..0eef563a3 100644
--- a/src/cc/eval.h
+++ b/src/cc/eval.h
@@ -129,14 +129,16 @@ public:
     uint256 blockHash      = uint256();
     uint32_t height        = 0;
     uint256 txHash         = uint256();
-    char symbol[64]        = "\0";
+    char symbol[64];
     uint256 MoM            = uint256();
     uint16_t MoMDepth      = 0;
     uint16_t ccId          = 0;
     uint256 MoMoM          = uint256();
     uint32_t MoMoMDepth    = 0;
 
-    NotarisationData(int IsBack=2) : IsBackNotarisation(IsBack) {}
+    NotarisationData(int IsBack=2) : IsBackNotarisation(IsBack) {
+        symbol[0] = '\0';
+    }
 
     ADD_SERIALIZE_METHODS;
 
@@ -171,7 +173,8 @@ public:
     template <typename Stream>
     void SerSymbol(Stream& s, CSerActionUnserialize act)
     {
-        char *nullPos = (char*) memchr(&s[0], 0, s.size());
+        size_t readlen = std::min(sizeof(symbol), s.size());
+        char *nullPos = (char*) memchr(&s[0], 0, readlen);
         if (!nullPos)
             throw std::ios_base::failure("couldn't parse symbol");
         s.read(symbol, nullPos-&s[0]+1);
diff --git a/src/main.cpp b/src/main.cpp
index c6272cc35..6ba31906a 100644
--- a/src/main.cpp
+++ b/src/main.cpp
@@ -1753,7 +1753,11 @@ CAmount GetBlockSubsidy(int nHeight, const Consensus::Params& consensusParams)
     else
     {
         if ( nHeight == 1 )
-            return(ASSETCHAINS_SUPPLY * COIN + (ASSETCHAINS_MAGIC & 0xffffff));
+        {
+            if ( ASSETCHAINS_STAKED == 0 || strcmp("VRSC",ASSETCHAINS_SYMBOL) == 0 )
+                return(ASSETCHAINS_SUPPLY * COIN + (ASSETCHAINS_MAGIC & 0xffffff));
+            else return(ASSETCHAINS_SUPPLY * COIN + ASSETCHAINS_MAGIC);
+        }
         else if ( ASSETCHAINS_ENDSUBSIDY == 0 || nHeight < ASSETCHAINS_ENDSUBSIDY )
         {
             if ( ASSETCHAINS_REWARD == 0 )
@@ -4060,11 +4064,13 @@ bool ContextualCheckBlockHeader(const CBlockHeader& block, CValidationState& sta
         // Don't accept any forks from the main chain prior to last checkpoint
         CBlockIndex* pcheckpoint = Checkpoints::GetLastCheckpoint(chainParams.Checkpoints());
         int32_t notarized_height;
-        if ( pcheckpoint && nHeight > 1 )
+        if ( nHeight == 1 && chainActive.Tip() != 0 && chainActive.Tip()->nHeight > 1 )
+            return(false);
+        if ( nHeight != 0 )
         {
-            if (nHeight < pcheckpoint->nHeight )
+            if ( pcheckpoint != 0 && nHeight < pcheckpoint->nHeight )
                 return state.DoS(1, error("%s: forked chain older than last checkpoint (height %d) vs %d", __func__, nHeight,pcheckpoint->nHeight));
-            else if ( komodo_checkpoint(&notarized_height,nHeight,hash) < 0 )
+            if ( komodo_checkpoint(&notarized_height,nHeight,hash) < 0 )
             {
                 CBlockIndex *heightblock = chainActive[nHeight];
                 if ( heightblock != 0 && heightblock->GetBlockHash() == hash )