diff --git a/app/api/coreApi.js b/app/api/coreApi.js
index 0a54dba..b9cae80 100644
--- a/app/api/coreApi.js
+++ b/app/api/coreApi.js
@@ -305,10 +305,11 @@ function getRawTransactions(txids) {
 
 					} else {
 						var queriedTx = queriedTxs[queriedTxsCurrentIndex];
+						if (queriedTx != null) {
+							combinedTxs.push(queriedTx);
 
-						combinedTxs.push(queriedTx);
-
-						txCache.set("getRawTransaction-" + queriedTx.txid, queriedTx, 3600000);
+							txCache.set("getRawTransaction-" + queriedTx.txid, queriedTx, 3600000);
+						}
 
 						queriedTxsCurrentIndex++;
 					}
diff --git a/app/utils.js b/app/utils.js
index 24c745c..f2444c6 100644
--- a/app/utils.js
+++ b/app/utils.js
@@ -150,7 +150,7 @@ function seededRandomIntBetween(seed, min, max) {
 }
 
 function getMinerFromCoinbaseTx(tx) {
-	if (tx == null) {
+	if (tx == null || tx.vin == null || tx.vin.length == 0) {
 		return null;
 	}