diff --git a/configure.ac b/configure.ac
index a5fe4587ff..8adb10f00d 100644
--- a/configure.ac
+++ b/configure.ac
@@ -3,7 +3,7 @@ AC_PREREQ([2.60])
 define(_CLIENT_VERSION_MAJOR, 0)
 define(_CLIENT_VERSION_MINOR, 11)
 define(_CLIENT_VERSION_REVISION, 1)
-define(_CLIENT_VERSION_BUILD, 18)
+define(_CLIENT_VERSION_BUILD, 19)
 define(_CLIENT_VERSION_IS_RELEASE, true)
 define(_COPYRIGHT_YEAR, 2015)
 AC_INIT([Darkcoin Core],[_CLIENT_VERSION_MAJOR._CLIENT_VERSION_MINOR._CLIENT_VERSION_REVISION],[info@darkcoin.io],[darkcoin])
diff --git a/src/checkpoints.cpp b/src/checkpoints.cpp
index ddb2a69091..6fd3f5bf5e 100644
--- a/src/checkpoints.cpp
+++ b/src/checkpoints.cpp
@@ -56,6 +56,7 @@ namespace Checkpoints
         ( 137993, uint256("0x00000000000cf69ce152b1bffdeddc59188d7a80879210d6e5c9503011929c3c"))
         ( 167996, uint256("0x000000000009486020a80f7f2cc065342b0c2fb59af5e090cd813dba68ab0fed"))
         ( 207992, uint256("0x00000000000d85c22be098f74576ef00b7aa00c05777e966aff68a270f1e01a5"))
+        ( 217752, uint256("0x00000000000a7baeb2148272a7e14edf5af99a64af456c0afc23d15a0918b704"))
         ;
     static const CCheckpointData data = {
         &mapCheckpoints,
diff --git a/src/clientversion.h b/src/clientversion.h
index dfb3c6b994..6cb78377f7 100644
--- a/src/clientversion.h
+++ b/src/clientversion.h
@@ -12,7 +12,7 @@
 #define CLIENT_VERSION_MAJOR       0
 #define CLIENT_VERSION_MINOR       11
 #define CLIENT_VERSION_REVISION    1
-#define CLIENT_VERSION_BUILD       18
+#define CLIENT_VERSION_BUILD       19
 
 
 
diff --git a/src/main.cpp b/src/main.cpp
index 07e184cc7e..a0785c7f02 100644
--- a/src/main.cpp
+++ b/src/main.cpp
@@ -2867,60 +2867,64 @@ bool CheckBlock(const CBlock& block, CValidationState& state, bool fCheckPOW, bo
         if(fDebug) LogPrintf("CheckBlock() : Masternode payment enforcement is off\n");
     }
 
-    if(MasternodePayments && !fLargeWorkForkFound && !fLargeWorkInvalidChainFound)
-    {
-        LOCK2(cs_main, mempool.cs);
+    if(!fLargeWorkForkFound && !fLargeWorkInvalidChainFound){
+        if(MasternodePayments)
+        {
+            LOCK2(cs_main, mempool.cs);
 
-        CBlockIndex *pindex = chainActive.Tip();
-        if(pindex != NULL){
-            if(pindex->GetBlockHash() == block.hashPrevBlock){
-                int64_t masternodePaymentAmount = GetMasternodePayment(pindex->nHeight+1, block.vtx[0].GetValueOut());
-                bool fIsInitialDownload = IsInitialBlockDownload();
+            CBlockIndex *pindex = chainActive.Tip();
+            if(pindex != NULL){
+                if(pindex->GetBlockHash() == block.hashPrevBlock){
+                    int64_t masternodePaymentAmount = GetMasternodePayment(pindex->nHeight+1, block.vtx[0].GetValueOut());
+                    bool fIsInitialDownload = IsInitialBlockDownload();
 
-                // If we don't already have its previous block, skip masternode payment step
-                if (!fIsInitialDownload && pindex != NULL)
-                {
-                    bool foundPaymentAmount = false;
-                    bool foundPayee = false;
-                    bool foundPaymentAndPayee = false;
+                    // If we don't already have its previous block, skip masternode payment step
+                    if (!fIsInitialDownload && pindex != NULL)
+                    {
+                        bool foundPaymentAmount = false;
+                        bool foundPayee = false;
+                        bool foundPaymentAndPayee = false;
 
-                    CScript payee;
-                    if(!masternodePayments.GetBlockPayee(chainActive.Tip()->nHeight+1, payee) || payee == CScript()){
-                        foundPayee = true; //doesn't require a specific payee
-                        foundPaymentAmount = true;
-                        foundPaymentAndPayee = true;
-                        LogPrintf("CheckBlock() : Using non-specific masternode payments %d\n", chainActive.Tip()->nHeight+1);
-                    }
-
-                    for (unsigned int i = 0; i < block.vtx[0].vout.size(); i++) {
-                        if(block.vtx[0].vout[i].nValue == masternodePaymentAmount )
+                        CScript payee;
+                        if(!masternodePayments.GetBlockPayee(chainActive.Tip()->nHeight+1, payee) || payee == CScript()){
+                            foundPayee = true; //doesn't require a specific payee
                             foundPaymentAmount = true;
-                        if(block.vtx[0].vout[i].scriptPubKey == payee )
-                            foundPayee = true;
-                        if(block.vtx[0].vout[i].nValue == masternodePaymentAmount && block.vtx[0].vout[i].scriptPubKey == payee)
                             foundPaymentAndPayee = true;
-                    }
+                            LogPrintf("CheckBlock() : Using non-specific masternode payments %d\n", chainActive.Tip()->nHeight+1);
+                        }
 
-                    if(!foundPaymentAndPayee) {
-                        CTxDestination address1;
-                        ExtractDestination(payee, address1);
-                        CBitcoinAddress address2(address1);
+                        for (unsigned int i = 0; i < block.vtx[0].vout.size(); i++) {
+                            if(block.vtx[0].vout[i].nValue == masternodePaymentAmount )
+                                foundPaymentAmount = true;
+                            if(block.vtx[0].vout[i].scriptPubKey == payee )
+                                foundPayee = true;
+                            if(block.vtx[0].vout[i].nValue == masternodePaymentAmount && block.vtx[0].vout[i].scriptPubKey == payee)
+                                foundPaymentAndPayee = true;
+                        }
 
-                        LogPrintf("CheckBlock() : Couldn't find masternode payment(%d|%d) or payee(%d|%s) nHeight %d. \n", foundPaymentAmount, masternodePaymentAmount, foundPayee, address2.ToString().c_str(), chainActive.Tip()->nHeight+1);
-                        if(!RegTest()) return state.DoS(100, error("CheckBlock() : Couldn't find masternode payment or payee"));
+                        if(!foundPaymentAndPayee) {
+                            CTxDestination address1;
+                            ExtractDestination(payee, address1);
+                            CBitcoinAddress address2(address1);
+
+                            LogPrintf("CheckBlock() : Couldn't find masternode payment(%d|%d) or payee(%d|%s) nHeight %d. \n", foundPaymentAmount, masternodePaymentAmount, foundPayee, address2.ToString().c_str(), chainActive.Tip()->nHeight+1);
+                            if(!RegTest()) return state.DoS(100, error("CheckBlock() : Couldn't find masternode payment or payee"));
+                        } else {
+                            LogPrintf("CheckBlock() : Found masternode payment %d\n", chainActive.Tip()->nHeight+1);
+                        }
                     } else {
-                        LogPrintf("CheckBlock() : Found masternode payment %d\n", chainActive.Tip()->nHeight+1);
+                        LogPrintf("CheckBlock() : Is initial download, skipping masternode payment check %d\n", chainActive.Tip()->nHeight+1);
                     }
                 } else {
-                    LogPrintf("CheckBlock() : Is initial download, skipping masternode payment check %d\n", chainActive.Tip()->nHeight+1);
+                    LogPrintf("CheckBlock() : Skipping masternode payment check - nHeight %d Hash %s\n", chainActive.Tip()->nHeight+1, block.GetHash().ToString().c_str());
                 }
             } else {
-                LogPrintf("CheckBlock() : Skipping masternode payment check - nHeight %d Hash %s\n", chainActive.Tip()->nHeight+1, block.GetHash().ToString().c_str());
+                LogPrintf("CheckBlock() : pindex is null, skipping masternode payment check\n");
             }
         } else {
-            LogPrintf("CheckBlock() : pindex is null, skipping masternode payment check\n");
+            LogPrintf("CheckBlock() : skipping masternode payment checks\n");
         }
-    } else {
+    }   else {
         LogPrintf("CheckBlock() : fork detected, skipping masternode payment checks\n");
     }
 
diff --git a/src/version.h b/src/version.h
index 5fdfaefe86..b663ba19ed 100644
--- a/src/version.h
+++ b/src/version.h
@@ -33,7 +33,7 @@ static const int PROTOCOL_VERSION = 70066;
 static const int INIT_PROTO_VERSION = 209;
 
 // disconnect from peers older than this proto version
-static const int MIN_PEER_PROTO_VERSION = 70051;
+static const int MIN_PEER_PROTO_VERSION = 70054;
 
 // nTime field added to CAddress, starting with this version;
 // if possible, avoid requesting addresses nodes older than this