diff --git a/src/init.cpp b/src/init.cpp
index db615b4088ef3..deac30e4f93f5 100644
--- a/src/init.cpp
+++ b/src/init.cpp
@@ -914,11 +914,13 @@ bool AppInit2(boost::thread_group& threadGroup)
                 boost::filesystem::path backupFile = backupPathStr + dateTimeStr;
                 sourceFile.make_preferred();
                 backupFile.make_preferred();
-                try {
-                    boost::filesystem::copy_file(sourceFile, backupFile);
-                    LogPrintf("Creating backup of %s -> %s\n", sourceFile, backupFile);
-                } catch(boost::filesystem::filesystem_error &error) {
-                    LogPrintf("Failed to create backup %s\n", error.what());
+                if(boost::filesystem::exists(sourceFile)) {
+                    try {
+                        boost::filesystem::copy_file(sourceFile, backupFile);
+                        LogPrintf("Creating backup of %s -> %s\n", sourceFile, backupFile);
+                    } catch(boost::filesystem::filesystem_error &error) {
+                        LogPrintf("Failed to create backup %s\n", error.what());
+                    }
                 }
                 // Keep only the last 10 backups, including the new one of course
                 typedef std::multimap<std::time_t, boost::filesystem::path> folder_set_t;
diff --git a/src/masternode-budget.cpp b/src/masternode-budget.cpp
index 303413cd982e8..4655e3e7cfb6e 100644
--- a/src/masternode-budget.cpp
+++ b/src/masternode-budget.cpp
@@ -956,7 +956,7 @@ void CBudgetManager::ProcessMessage(CNode* pfrom, std::string& strCommand, CData
         mapSeenMasternodeBudgetVotes.insert(make_pair(vote.GetHash(), vote));
         if(!vote.SignatureValid(true)){
             LogPrintf("mvote - signature invalid\n");
-            Misbehaving(pfrom->GetId(), 20);
+            if(masternodeSync.IsSynced()) Misbehaving(pfrom->GetId(), 20);
             // it could just be a non-synced masternode
             mnodeman.AskForMN(pfrom, vote.vin);
             return;
@@ -1026,7 +1026,7 @@ void CBudgetManager::ProcessMessage(CNode* pfrom, std::string& strCommand, CData
         mapSeenFinalizedBudgetVotes.insert(make_pair(vote.GetHash(), vote));
         if(!vote.SignatureValid(true)){
             LogPrintf("fbvote - signature invalid\n");
-            Misbehaving(pfrom->GetId(), 20);
+            if(masternodeSync.IsSynced()) Misbehaving(pfrom->GetId(), 20);
             // it could just be a non-synced masternode
             mnodeman.AskForMN(pfrom, vote.vin);
             return;
diff --git a/src/masternode-payments.cpp b/src/masternode-payments.cpp
index 8608c0bc0efdc..5e756cf97ea22 100644
--- a/src/masternode-payments.cpp
+++ b/src/masternode-payments.cpp
@@ -394,7 +394,7 @@ void CMasternodePayments::ProcessMessageMasternodePayments(CNode* pfrom, std::st
 
         if(!winner.SignatureValid()){
             LogPrintf("mnw - invalid signature\n");
-            Misbehaving(pfrom->GetId(), 20);
+            if(masternodeSync.IsSynced()) Misbehaving(pfrom->GetId(), 20);
             // it could just be a non-synced masternode
             mnodeman.AskForMN(pfrom, winner.vinMasternode);
             return;
@@ -656,7 +656,7 @@ bool CMasternodePaymentWinner::IsValid(CNode* pnode, std::string& strError)
         {
             strError = strprintf("Masternode not in the top %d (%d)", MNPAYMENTS_SIGNATURES_TOTAL, n);
             LogPrintf("CMasternodePaymentWinner::IsValid - %s\n", strError);
-            Misbehaving(pnode->GetId(), 20);            
+            if(masternodeSync.IsSynced()) Misbehaving(pnode->GetId(), 20);
         }
         return false;
     }
diff --git a/src/masternodeman.cpp b/src/masternodeman.cpp
index 35eef991acff2..429df7d002b5b 100644
--- a/src/masternodeman.cpp
+++ b/src/masternodeman.cpp
@@ -354,6 +354,8 @@ void CMasternodeMan::Clear()
     mAskedUsForMasternodeList.clear();
     mWeAskedForMasternodeList.clear();
     mWeAskedForMasternodeListEntry.clear();
+    mapSeenMasternodeBroadcast.clear();
+    mapSeenMasternodePing.clear();
     nDsqCount = 0;
 }