diff --git a/lib/blockManager.js b/lib/blockManager.js
index 02a286a..bea07e2 100644
--- a/lib/blockManager.js
+++ b/lib/blockManager.js
@@ -421,22 +421,29 @@ function blockPayments(block) {
     switch (block.poolType) {
         case global.protos.POOLTYPE.PPS:
             // PPS is paid out per share find per block, so this is handled in the main block-find loop.
+            global.database.unlockBlock(block.hash);
             break;
         case global.protos.POOLTYPE.PPLNS:
-            global.coinFuncs.getBlockHeaderByHash(block.hash, function (header) {
-                calculatePPLNSPayments(header);
+            global.coinFuncs.getBlockHeaderByHash(block.hash, function (err, header) {
+                if (err === null){
+                    calculatePPLNSPayments(header);
+                    global.database.unlockBlock(block.hash);
+                }
             });
             break;
         case global.protos.POOLTYPE.SOLO:
-            global.coinFuncs.getBlockHeaderByHash(block.hash, function (header) {
-                calculateSoloPayments(header);
+            global.coinFuncs.getBlockHeaderByHash(block.hash, function (err, header) {
+                if (err === null){
+                    calculateSoloPayments(header);
+                    global.database.unlockBlock(block.hash);
+                }
             });
             break;
         default:
             console.log("Unknown payment type.  FREAKOUT");
+            global.database.unlockBlock(block.hash);
             break;
     }
-    global.database.unlockBlock(block.hash);
 }
 
 function blockScanner() {
@@ -446,27 +453,33 @@ function blockScanner() {
         return;
     }
     scanInProgress = true;
-    global.coinFuncs.getLastBlockHeader(function (blockHeader) {
-        if (lastBlock === blockHeader.height) {
-            debug("No new work to be performed, block header matches last block");
-            scanInProgress = false;
-            return;
-        }
-        debug("Parsing data for new blocks");
-        lastBlock = blockHeader.height;
-        range.range(0, (blockHeader.height - Math.floor(global.config.payout.blocksRequired/2))).forEach(function (blockID) {
-            if (!blockIDCache.hasOwnProperty(blockID)) {
-                inc_check += 1;
-                blockQueue.push({blockID: blockID}, function (err) {
-                    debug("Completed block scan on " + blockID);
-                    if (err) {
-                        console.error("Error processing " + blockID);
-                    }
-                });
+    global.coinFuncs.getLastBlockHeader(function (err, blockHeader) {
+        if (err === null){
+            if (lastBlock === blockHeader.height) {
+                debug("No new work to be performed, block header matches last block");
+                scanInProgress = false;
+                return;
             }
-        });
-        if (inc_check === 0) {
-            debug("No new work to be performed, initial scan complete");
+            debug("Parsing data for new blocks");
+            lastBlock = blockHeader.height;
+            range.range(0, (blockHeader.height - Math.floor(global.config.payout.blocksRequired/2))).forEach(function (blockID) {
+                if (!blockIDCache.hasOwnProperty(blockID)) {
+                    inc_check += 1;
+                    blockQueue.push({blockID: blockID}, function (err) {
+                        debug("Completed block scan on " + blockID);
+                        if (err) {
+                            console.error("Error processing " + blockID);
+                        }
+                    });
+                }
+            });
+            if (inc_check === 0) {
+                debug("No new work to be performed, initial scan complete");
+                scanInProgress = false;
+                blockScannerTask = setInterval(blockScanner, 1000);
+            }
+        } else {
+            console.error(`Upstream error from the block daemon.  Resetting scanner due to: ${JSON.stringify(blockHeader)}`);
             scanInProgress = false;
             blockScannerTask = setInterval(blockScanner, 1000);
         }
diff --git a/lib/coins/aeon.js b/lib/coins/aeon.js
index d58e877..4d0f934 100644
--- a/lib/coins/aeon.js
+++ b/lib/coins/aeon.js
@@ -31,9 +31,10 @@ function Coin(data){
     this.getBlockHeaderByID = function(blockId, callback){
         global.support.rpcDaemon('getblockheaderbyheight', {"height": blockId}, function (body) {
             if (body.hasOwnProperty('result')){
-                return callback(body.result.block_header);
+                return callback(null, body.result.block_header);
             } else {
                 console.error(JSON.stringify(body));
+                callback(true, body);
             }
         });
     };
@@ -41,10 +42,10 @@ function Coin(data){
     this.getBlockHeaderByHash = function(blockHash, callback){
         global.support.rpcDaemon('getblockheaderbyhash', {"hash": blockHash}, function (body) {
             if (typeof(body) !== 'undefined' && body.hasOwnProperty('result')){
-                return callback(body.result.block_header);
+                return callback(null, body.result.block_header);
             } else {
                 console.error(JSON.stringify(body));
-                return callback(false);
+                return callback(true, body);
             }
         });
     };
@@ -52,9 +53,10 @@ function Coin(data){
     this.getLastBlockHeader = function(callback){
         global.support.rpcDaemon('getlastblockheader', [], function (body) {
             if (typeof(body) !== 'undefined' && body.hasOwnProperty('result')){
-                return callback(body.result.block_header);
+                return callback(null, body.result.block_header);
             } else {
                 console.error(JSON.stringify(body));
+                return callback(true, body);
             }
         });
     };
diff --git a/lib/coins/krb.js b/lib/coins/krb.js
index e5491ad..1494da8 100644
--- a/lib/coins/krb.js
+++ b/lib/coins/krb.js
@@ -31,9 +31,10 @@ function Coin(data){
     this.getBlockHeaderByID = function(blockId, callback){
         global.support.rpcDaemon('getblockheaderbyheight', {"height": blockId}, function (body) {
             if (body.hasOwnProperty('result')){
-                return callback(body.result.block_header);
+                return callback(null, body.result.block_header);
             } else {
                 console.error(JSON.stringify(body));
+                return callback(true, body);
             }
         });
     };
@@ -41,10 +42,10 @@ function Coin(data){
     this.getBlockHeaderByHash = function(blockHash, callback){
         global.support.rpcDaemon('getblockheaderbyhash', {"hash": blockHash}, function (body) {
             if (typeof(body) !== 'undefined' && body.hasOwnProperty('result')){
-                return callback(body.result.block_header);
+                return callback(null, body.result.block_header);
             } else {
                 console.error(JSON.stringify(body));
-                return callback(false);
+                return callback(true, body);
             }
         });
     };
@@ -52,9 +53,10 @@ function Coin(data){
     this.getLastBlockHeader = function(callback){
         global.support.rpcDaemon('getlastblockheader', [], function (body) {
             if (typeof(body) !== 'undefined' && body.hasOwnProperty('result')){
-                return callback(body.result.block_header);
+                return callback(null, body.result.block_header);
             } else {
                 console.error(JSON.stringify(body));
+                return callback(true, body);
             }
         });
     };
diff --git a/lib/coins/xmr.js b/lib/coins/xmr.js
index 7ccdc47..ac97e8b 100644
--- a/lib/coins/xmr.js
+++ b/lib/coins/xmr.js
@@ -45,9 +45,10 @@ function Coin(data){
     this.getBlockHeaderByID = function(blockId, callback){
         global.support.rpcDaemon('getblockheaderbyheight', {"height": blockId}, function (body) {
             if (body.hasOwnProperty('result')){
-                return callback(body.result.block_header);
+                return callback(null, body.result.block_header);
             } else {
                 console.error(JSON.stringify(body));
+                return callback(true, body);
             }
         });
     };
@@ -55,10 +56,10 @@ function Coin(data){
     this.getBlockHeaderByHash = function(blockHash, callback){
         global.support.rpcDaemon('getblockheaderbyhash', {"hash": blockHash}, function (body) {
             if (typeof(body) !== 'undefined' && body.hasOwnProperty('result')){
-                return callback(body.result.block_header);
+                return callback(null, body.result.block_header);
             } else {
                 console.error(JSON.stringify(body));
-                return callback(false);
+                return callback(true, body);
             }
         });
     };
@@ -66,9 +67,10 @@ function Coin(data){
     this.getLastBlockHeader = function(callback){
         global.support.rpcDaemon('getlastblockheader', [], function (body) {
             if (typeof(body) !== 'undefined' && body.hasOwnProperty('result')){
-                return callback(body.result.block_header);
+                return callback(null, body.result.block_header);
             } else {
                 console.error(JSON.stringify(body));
+                return callback(true, body);
             }
         });
     };
@@ -78,7 +80,7 @@ function Coin(data){
             reserve_size: 17,
             wallet_address: walletAddress
         }, function(body){
-            return callback(body);
+            return callback(err, body);
         });
     };
 
diff --git a/lib/local_comms.js b/lib/local_comms.js
index cb996e4..a6e39b6 100644
--- a/lib/local_comms.js
+++ b/lib/local_comms.js
@@ -375,8 +375,8 @@ function Database(){
         this.refreshEnv();
         try{
             let blockDataDecoded = global.protos.Block.decode(blockData);
-            global.coinFuncs.getBlockHeaderByHash(blockDataDecoded.hash, function(header){
-                if (typeof(header) === 'undefined' || !header){
+            global.coinFuncs.getBlockHeaderByHash(blockDataDecoded.hash, function(err, header){
+                if (err || typeof(header) === 'undefined' || !header){
                     return callback(false);
                 }
                 blockDataDecoded.value = header.reward;
@@ -409,12 +409,14 @@ function Database(){
         let blockData = txn.getBinary(global.database.blockDB, blockId);
         txn.abort();
         let blockDataDecoded = global.protos.Block.decode(blockData);
-        global.coinFuncs.getBlockHeaderByHash(blockDataDecoded.hash, function(header){
-            blockDataDecoded.value = header.reward;
-            blockData = global.database.calculateShares(blockDataDecoded, blockId);
-            let txn = global.database.env.beginTxn();
-            txn.putBinary(global.database.blockDB, blockId, blockData);
-            txn.commit();
+        global.coinFuncs.getBlockHeaderByHash(blockDataDecoded.hash, function(err, header){
+            if (err === null) {
+                blockDataDecoded.value = header.reward;
+                blockData = global.database.calculateShares(blockDataDecoded, blockId);
+                let txn = global.database.env.beginTxn();
+                txn.putBinary(global.database.blockDB, blockId, blockData);
+                txn.commit();
+            }
         });
     };
 
diff --git a/lib/pool.js b/lib/pool.js
index 41f470d..23d402b 100644
--- a/lib/pool.js
+++ b/lib/pool.js
@@ -155,8 +155,8 @@ function checkAliveMiners() {
 }
 
 function templateUpdate(repeating) {
-    global.coinFuncs.getBlockTemplate(global.config.pool.address, function (rpcResponse) {
-        if (rpcResponse) {
+    global.coinFuncs.getBlockTemplate(global.config.pool.address, function (err, rpcResponse) {
+        if (rpcResponse && typeof rpcResponse.result !== 'undefined') {
             rpcResponse = rpcResponse.result;
             let buffer = new Buffer(rpcResponse.blocktemplate_blob, 'hex');
             let new_hash = new Buffer(32);
@@ -174,6 +174,8 @@ function templateUpdate(repeating) {
             if (repeating !== false) {
                 setTimeout(templateUpdate, 300);
             }
+        } else {
+            setTimeout(templateUpdate, 300);
         }
     });
 }
diff --git a/lib/worker.js b/lib/worker.js
index 941c347..8589dcb 100644
--- a/lib/worker.js
+++ b/lib/worker.js
@@ -16,7 +16,10 @@ function updateShareStats() {
     let activeAddresses = [];
     async.waterfall([
         function (callback) {
-            global.coinFuncs.getLastBlockHeader(function (body) {
+            global.coinFuncs.getLastBlockHeader(function (err, body) {
+                if (err !== null){
+                    return callback(err, "Invalid block header");
+                }
                 callback(null, body.height + 1);
             });
         },
@@ -493,8 +496,12 @@ function updateWalletStats() {
 }
 
 function monitorNodes() {
-    global.mysql.query("SELECT blockID FROM pools WHERE last_checkin > date_sub(now(), interval 30 minute)").then(function (rows) {
-        global.coinFuncs.getLastBlockHeader(function (block) {
+    global.mysql.query("SELECT blockID, hostname, ip FROM pools WHERE last_checkin > date_sub(now(), interval 30 minute)").then(function (rows) {
+        global.coinFuncs.getLastBlockHeader(function (err, block) {
+            if (err !== null){
+                console.error("Issue in getting block header.  Skipping node monitor");
+                return;
+            }
             rows.forEach(function (row) {
                     if (row.blockID < block.height - 3) {
                         global.support.sendEmail(global.config.general.adminEmail, "Pool server behind in blocks", "The pool server: "+row.hostname+" with IP: "+row.ip+" is "+block.height - row.blockID+ " blocks behind");