diff --git a/configure.ac b/configure.ac
index ffe0eb913..0e7a3121e 100644
--- a/configure.ac
+++ b/configure.ac
@@ -3,7 +3,7 @@ AC_PREREQ([2.60])
 define(_CLIENT_VERSION_MAJOR, 0)
 define(_CLIENT_VERSION_MINOR, 12)
 define(_CLIENT_VERSION_REVISION, 0)
-define(_CLIENT_VERSION_BUILD, 33)
+define(_CLIENT_VERSION_BUILD, 34)
 define(_CLIENT_VERSION_IS_RELEASE, true)
 define(_COPYRIGHT_YEAR, 2015)
 AC_INIT([Dash Core],[_CLIENT_VERSION_MAJOR._CLIENT_VERSION_MINOR._CLIENT_VERSION_REVISION],[info@dashpay.io],[dash])
diff --git a/src/clientversion.h b/src/clientversion.h
index 7b3b66037..85330ef3a 100644
--- a/src/clientversion.h
+++ b/src/clientversion.h
@@ -17,7 +17,7 @@
 #define CLIENT_VERSION_MAJOR 0
 #define CLIENT_VERSION_MINOR 12
 #define CLIENT_VERSION_REVISION 0
-#define CLIENT_VERSION_BUILD 33
+#define CLIENT_VERSION_BUILD 34
 
 //! Set to true for release, false for prerelease or test build
 #define CLIENT_VERSION_IS_RELEASE true
diff --git a/src/instantx.h b/src/instantx.h
index ceb5fc6ce..01df0bb25 100644
--- a/src/instantx.h
+++ b/src/instantx.h
@@ -32,7 +32,7 @@ class CConsensusVote;
 class CTransaction;
 class CTransactionLock;
 
-static const int MIN_INSTANTX_PROTO_VERSION = 70099;
+static const int MIN_INSTANTX_PROTO_VERSION = 70100;
 
 extern map<uint256, CTransaction> mapTxLockReq;
 extern map<uint256, CTransaction> mapTxLockReqRejected;
diff --git a/src/miner.cpp b/src/miner.cpp
index 19b59ac4b..a29ac4033 100644
--- a/src/miner.cpp
+++ b/src/miner.cpp
@@ -129,7 +129,15 @@ CBlockTemplate* CreateNewBlock(const CScript& scriptPubKeyIn)
     CAmount nFees = 0;
 
     {
-        LOCK2(cs_main, mempool.cs);
+        TRY_LOCK(cs_main, fLockMain);
+        if (!fLockMain) {   
+            LogPrintf("CreateNewBlock : ERROR - failed to lock cs_main - disabled mining\n");
+        }
+        TRY_LOCK(mempool.cs, fLockMempool);
+        if (!fLockMempool) {   
+            LogPrintf("CreateNewBlock : ERROR - failed to lock mempool.cs - disabled mining\n");
+        }
+
         CBlockIndex* pindexPrev = chainActive.Tip();
         const int nHeight = pindexPrev->nHeight + 1;
         CCoinsViewCache view(pcoinsTip);
diff --git a/src/version.h b/src/version.h
index a75c54fcd..a9992a5aa 100644
--- a/src/version.h
+++ b/src/version.h
@@ -10,7 +10,7 @@
  * network protocol versioning
  */
 
-static const int PROTOCOL_VERSION = 70099;
+static const int PROTOCOL_VERSION = 70100;
 
 //! initial proto version, to be increased after version/verack negotiation
 static const int INIT_PROTO_VERSION = 209;
@@ -22,19 +22,19 @@ static const int GETHEADERS_VERSION = 70077;
 static const int MIN_PEER_PROTO_VERSION = 70066;
 
 //! minimum peer version accepted by DarksendPool
-static const int MIN_POOL_PEER_PROTO_VERSION = 70099;
+static const int MIN_POOL_PEER_PROTO_VERSION = 70100;
 
 //! minimum peer version for masternode budgets
-static const int MIN_BUDGET_PEER_PROTO_VERSION = 70099;
+static const int MIN_BUDGET_PEER_PROTO_VERSION = 70100;
 
 //! minimum peer version for masternode winner broadcasts
-static const int MIN_MNW_PEER_PROTO_VERSION = 70099;
+static const int MIN_MNW_PEER_PROTO_VERSION = 70100;
 
 //! minimum peer version that can receive masternode payments
 // V1 - Last protocol version before update
 // V2 - Newest protocol version
 static const int MIN_MASTERNODE_PAYMENT_PROTO_VERSION_1 = 70066;
-static const int MIN_MASTERNODE_PAYMENT_PROTO_VERSION_2 = 70099;
+static const int MIN_MASTERNODE_PAYMENT_PROTO_VERSION_2 = 70100;
 
 //! nTime field added to CAddress, starting with this version;
 //! if possible, avoid requesting addresses nodes older than this