diff --git a/src/komodo_nSPV.h b/src/komodo_nSPV.h
index 27f03a5be..51deb18be 100644
--- a/src/komodo_nSPV.h
+++ b/src/komodo_nSPV.h
@@ -286,7 +286,7 @@ int32_t NSPV_rwinforesp(int32_t rwflag,uint8_t *serialized,struct NSPV_inforesp
     len += iguana_rwnum(rwflag,&serialized[len],sizeof(ptr->height),&ptr->height);
     len += iguana_rwnum(rwflag,&serialized[len],sizeof(ptr->hdrheight),&ptr->hdrheight);
     len += NSPV_rwequihdr(rwflag,&serialized[len],&ptr->H);
-    //fprintf(stderr,"hdr rwlen.%d\n",len);
+fprintf(stderr,"hdr rwlen.%d\n",len);
     return(len);
 }
 
diff --git a/src/komodo_nSPV_fullnode.h b/src/komodo_nSPV_fullnode.h
index b5eba8ed3..ecd8dde44 100644
--- a/src/komodo_nSPV_fullnode.h
+++ b/src/komodo_nSPV_fullnode.h
@@ -520,15 +520,16 @@ void komodo_nSPVreq(CNode *pfrom,std::vector<uint8_t> request) // received a req
                 if ( len == 1+sizeof(reqheight) )
                     iguana_rwnum(0,&request[1],sizeof(reqheight),&reqheight);
                 else reqheight = 0;
-                //fprintf(stderr,"request height.%d\n",reqheight);
+                fprintf(stderr,"request height.%d\n",reqheight);
                 memset(&I,0,sizeof(I));
                 if ( (slen= NSPV_getinfo(&I,reqheight)) > 0 )
                 {
                     response.resize(1 + slen);
                     response[0] = NSPV_INFORESP;
-                    //fprintf(stderr,"slen.%d\n",slen);
+                    fprintf(stderr,"slen.%d\n",slen);
                     if ( NSPV_rwinforesp(1,&response[1],&I) == slen )
                     {
+                        fprintf(stderr,"send info resp to id %d\n",(int32_t)pfrom->id);
                         pfrom->PushMessage("nSPV",response);
                         pfrom->prevtimes[ind] = timestamp;
                     }
diff --git a/src/komodo_nSPV_superlite.h b/src/komodo_nSPV_superlite.h
index f8dae10bf..c8a86196d 100644
--- a/src/komodo_nSPV_superlite.h
+++ b/src/komodo_nSPV_superlite.h
@@ -442,7 +442,7 @@ UniValue NSPV_mempoolresp_json(struct NSPV_mempoolresp *ptr)
     UniValue result(UniValue::VOBJ),array(UniValue::VARR); int32_t i;
     result.push_back(Pair("result","success"));
     for (i=0; i<ptr->numtxids; i++)
-        array.push_back(Pair("txid",ptr->txids[i].GetHex().c_str()));
+        array.push_back(ptr->txids[i].GetHex().c_str());
     result.push_back(Pair("txids",array));
     result.push_back(Pair("address",ptr->coinaddr));
     result.push_back(Pair("isCC",ptr->CCflag));
@@ -476,7 +476,7 @@ UniValue NSPV_ntzsproof_json(struct NSPV_ntzsproofresp *ptr)
     result.push_back(Pair("prevtxlen",(int64_t)ptr->prevtxlen));
     result.push_back(Pair("nexttxid",ptr->nexttxid.GetHex()));
     result.push_back(Pair("nexttxidht",(int64_t)ptr->nexttxidht));
-    result.push_back(Pair("nexttxlen",(int64_t)ptr->prevtxlen));
+    result.push_back(Pair("nexttxlen",(int64_t)ptr->nexttxlen));
     result.push_back(Pair("numhdrs",(int64_t)ptr->common.numhdrs));
     result.push_back(Pair("headers",NSPV_headers_json(ptr->common.hdrs,ptr->common.numhdrs,ptr->common.prevht)));
     result.push_back(Pair("lastpeer",NSPV_lastpeer));
diff --git a/src/main.cpp b/src/main.cpp
index f3b714eaa..d41d50a13 100644
--- a/src/main.cpp
+++ b/src/main.cpp
@@ -7091,7 +7091,7 @@ bool static ProcessMessage(CNode* pfrom, string strCommand, CDataStream& vRecv,
     LogPrint("net", "received: %s (%u bytes) peer=%d\n", SanitizeString(strCommand), vRecv.size(), pfrom->id);
     //if ( KOMODO_NSPV != 0 )
     //if ( strCommand != "version" && strCommand != "verack" )
-    //    fprintf(stderr, "recv: %s peer=%d\n", SanitizeString(strCommand).c_str(), (int32_t)pfrom->GetId());
+    //    fprintf(stderr, "recv: %s (%u bytes) peer=%d\n", SanitizeString(strCommand).c_str(), (int32_t)vRecv.size(), (int32_t)pfrom->GetId());
     if (mapArgs.count("-dropmessagestest") && GetRand(atoi(mapArgs["-dropmessagestest"])) == 0)
     {
         LogPrintf("dropmessagestest DROPPING RECV MESSAGE\n");
@@ -7287,7 +7287,8 @@ bool static ProcessMessage(CNode* pfrom, string strCommand, CDataStream& vRecv,
     else if (pfrom->nVersion < chainparams.GetConsensus().vUpgrades[
         CurrentEpoch(GetHeight(), chainparams.GetConsensus())].nProtocolVersion)
     {
-        LogPrintf("peer=%d using obsolete version %i; disconnecting\n", pfrom->id, pfrom->nVersion);
+        LogPrintf("peer=%d using obsolete version %i vs %d; disconnecting\n", pfrom->id, pfrom->nVersion,(int32_t)chainparams.GetConsensus().vUpgrades[
+                                                                                                                                                       CurrentEpoch(GetHeight(), chainparams.GetConsensus())].nProtocolVersion);
         pfrom->PushMessage("reject", strCommand, REJECT_OBSOLETE,
                             strprintf("Version must be %d or greater",
                             chainparams.GetConsensus().vUpgrades[
diff --git a/src/wallet/rpcdump.cpp b/src/wallet/rpcdump.cpp
index 395612a3d..c734eb0d9 100644
--- a/src/wallet/rpcdump.cpp
+++ b/src/wallet/rpcdump.cpp
@@ -992,6 +992,8 @@ UniValue nspv_getinfo(const UniValue& params, bool fHelp)
     int32_t reqht = 0;
     if ( fHelp || params.size() > 1 )
         throw runtime_error("nspv_getinfo [hdrheight]\n");
+    if ( KOMODO_NSPV == 0 )
+        throw runtime_error("-nSPV=1 must be set to use nspv\n");
     if ( params.size() == 1 )
         reqht = atoi((char *)params[0].get_str().c_str());
     return(NSPV_getinfo_req(reqht));
@@ -1001,6 +1003,8 @@ UniValue nspv_logout(const UniValue& params, bool fHelp)
 {
     if ( fHelp || params.size() != 0 )
         throw runtime_error("nspv_logout\n");
+    if ( KOMODO_NSPV == 0 )
+        throw runtime_error("-nSPV=1 must be set to use nspv\n");
     return(NSPV_logout());
 }
 
@@ -1008,6 +1012,8 @@ UniValue nspv_login(const UniValue& params, bool fHelp)
 {
     if ( fHelp || params.size() != 1 )
         throw runtime_error("nspv_login wif\n");
+    if ( KOMODO_NSPV == 0 )
+        throw runtime_error("-nSPV=1 must be set to use nspv\n");
     return(NSPV_login((char *)params[0].get_str().c_str()));
 }
 
@@ -1016,6 +1022,8 @@ UniValue nspv_listunspent(const UniValue& params, bool fHelp)
     int32_t skipcount = 0,CCflag = 0;
     if ( fHelp || params.size() > 3 )
         throw runtime_error("nspv_listunspent [address [isCC [skipcount]]]\n");
+    if ( KOMODO_NSPV == 0 )
+        throw runtime_error("-nSPV=1 must be set to use nspv\n");
     if ( params.size() == 0 )
     {
         if ( NSPV_address.size() != 0 )
@@ -1039,6 +1047,8 @@ UniValue nspv_mempool(const UniValue& params, bool fHelp)
     memset(&txid,0,sizeof(txid));
     if ( fHelp || params.size() > 5 )
         throw runtime_error("nspv_mempool func(0 all, 1 address recv, 2 txid/vout spent, 3 txid inmempool) address isCC [txid vout]]]\n");
+    if ( KOMODO_NSPV == 0 )
+        throw runtime_error("-nSPV=1 must be set to use nspv\n");
     funcid = atoi((char *)params[0].get_str().c_str());
     coinaddr = (char *)params[1].get_str().c_str();
     CCflag = atoi((char *)params[2].get_str().c_str());
@@ -1057,6 +1067,8 @@ UniValue nspv_listtransactions(const UniValue& params, bool fHelp)
     int32_t skipcount = 0,CCflag = 0;
     if ( fHelp || params.size() > 3 )
         throw runtime_error("nspv_listtransactions [address [isCC [skipcount]]]\n");
+    if ( KOMODO_NSPV == 0 )
+        throw runtime_error("-nSPV=1 must be set to use nspv\n");
     if ( params.size() == 0 )
     {
         if ( NSPV_address.size() != 0 )
@@ -1080,6 +1092,8 @@ UniValue nspv_spentinfo(const UniValue& params, bool fHelp)
     uint256 txid; int32_t vout;
     if ( fHelp || params.size() != 2 )
         throw runtime_error("nspv_spentinfo txid vout\n");
+    if ( KOMODO_NSPV == 0 )
+        throw runtime_error("-nSPV=1 must be set to use nspv\n");
     txid = Parseuint256((char *)params[0].get_str().c_str());
     vout = atoi((char *)params[1].get_str().c_str());
     return(NSPV_spentinfo(txid,vout));
@@ -1090,6 +1104,8 @@ UniValue nspv_notarizations(const UniValue& params, bool fHelp)
     int32_t height;
     if ( fHelp || params.size() != 1 )
         throw runtime_error("nspv_notarizations height\n");
+    if ( KOMODO_NSPV == 0 )
+        throw runtime_error("-nSPV=1 must be set to use nspv\n");
     height = atoi((char *)params[0].get_str().c_str());
     return(NSPV_notarizations(height));
 }
@@ -1099,6 +1115,8 @@ UniValue nspv_hdrsproof(const UniValue& params, bool fHelp)
     int32_t prevheight,nextheight;
     if ( fHelp || params.size() != 2 )
         throw runtime_error("nspv_hdrsproof prevheight nextheight\n");
+    if ( KOMODO_NSPV == 0 )
+        throw runtime_error("-nSPV=1 must be set to use nspv\n");
     prevheight = atoi((char *)params[0].get_str().c_str());
     nextheight = atoi((char *)params[1].get_str().c_str());
     return(NSPV_hdrsproof(prevheight,nextheight));
@@ -1109,6 +1127,8 @@ UniValue nspv_txproof(const UniValue& params, bool fHelp)
     uint256 txid; int32_t height;
     if ( fHelp || params.size() != 2 )
         throw runtime_error("nspv_txproof txid height\n");
+    if ( KOMODO_NSPV == 0 )
+        throw runtime_error("-nSPV=1 must be set to use nspv\n");
     txid = Parseuint256((char *)params[0].get_str().c_str());
     height = atoi((char *)params[1].get_str().c_str());
     return(NSPV_txproof(0,txid,height));
@@ -1118,7 +1138,9 @@ UniValue nspv_spend(const UniValue& params, bool fHelp)
 {
     uint64_t satoshis;
     if ( fHelp || params.size() != 2 )
-        throw runtime_error("nspv_spend destaddr amount\n");
+        throw runtime_error("nspv_spend address amount\n");
+    if ( KOMODO_NSPV == 0 )
+        throw runtime_error("-nSPV=1 must be set to use nspv\n");
     if ( NSPV_address.size() == 0 )
         throw runtime_error("to nspv_send you need an active nspv_login\n");
     satoshis = atof(params[1].get_str().c_str())*COIN + 0.0000000049;
@@ -1132,5 +1154,7 @@ UniValue nspv_broadcast(const UniValue& params, bool fHelp)
 {
     if ( fHelp || params.size() != 1 )
         throw runtime_error("nspv_broadcast hex\n");
+    if ( KOMODO_NSPV == 0 )
+        throw runtime_error("-nSPV=1 must be set to use nspv\n");
     return(NSPV_broadcast((char *)params[0].get_str().c_str()));
 }