diff --git a/examples/http.js b/examples/http.js
index 889470d4..5fd4f8fb 100644
--- a/examples/http.js
+++ b/examples/http.js
@@ -16,7 +16,7 @@
 		config.server = require('http').createServer(Gun.serve(__dirname));
 	}
 
-	var gun = Gun({web: config.server.listen(config.port), rad: false, localStorage: false}); // TODO: ONLY TEMPORARILY!!! UNDO TO GET RAD ONCE TESTED!!!!
+	var gun = Gun({web: config.server.listen(config.port), rad: false, radisk: false, localStorage: false}); // TODO: ONLY TEMPORARILY!!! UNDO TO GET RAD ONCE TESTED!!!!
 	console.log('Relay peer started on port ' + config.port + ' with /gun');
 
 	module.exports = gun;
diff --git a/examples/stats.html b/examples/stats.html
index 2dab5e23..c874606c 100644
--- a/examples/stats.html
+++ b/examples/stats.html
@@ -29,7 +29,7 @@
   .tall { height: 5em; }
 </style>
 
-<div class="center"><span class="shout" id="peers">0</span> peers <span class="shout" id="time">0</span> min <span class="shout" id="nodes">0</span> nodes <span class="shout" id="hours">0</span> hours <span class="shout" id="block">0</span> block</div>
+<div class="center"><span class="shout" id="peers">0</span> peers <span class="shout" id="time">0</span> min <span class="shout" id="nodes">0</span> nodes <span class="shout" id="hours">0</span> hours <span class="shout" id="block">0</span> block <span class="shout" id="stack">0</span> stack</div>
 
 <input id="url" class="center input crack" placeholder="enter peer stats source url">
 
@@ -51,7 +51,8 @@
     var data = await (await fetch(url.value||(location.origin+'/gun/stats.radata'), {method: 'GET',mode: 'cors'})).json();
     $('#block').text(((br += (+new Date - S)/1000) / ++bt).toFixed(1));
     data.over = (data.over/1000) || 15;
-		$('#peers').text(data.peers.count);
+		$('#stack').text(data.cpu.stack);
+    $('#peers').text(data.peers.count);
 		$('#time').text((data.peers.time / 1000 / 60).toFixed(0));
 		$('#nodes').text(data.node.count);
 		$('#hours').text((data.up.time / 60 / 60).toFixed(1));
diff --git a/gun.js b/gun.js
index 5eb4445a..b9009e89 100644
--- a/gun.js
+++ b/gun.js
@@ -381,7 +381,7 @@
 			}
 			function ack(msg){ // aggregate ACKs.
 				var id = msg['@'] || '', root = (msg.$._||'').root, tmp;
-				if(msg.err && root && root.dup.s[id]){ console.log('add err to original message to not send') }
+				if(msg.err && root && (tmp = root.dup.s[id])){ tmp.err = msg.err; } // add error to original message.
 				if(!(tmp = id._)){ /*console.log("TODO: handle ack id.");*/ return }
 				tmp.acks = (tmp.acks||0) + 1;
 				if(0 == tmp.stun && tmp.acks == tmp.all){ // TODO: if ack is synchronous this may not work?
@@ -1232,7 +1232,7 @@
 					var meta = msg._||(msg._=function(){});
 					if(!(id = msg['#'])){ id = msg['#'] = String.random(9) }
 					!loop && dup_track(id);//.it = it(msg); // track for 9 seconds, default. Earth<->Mars would need more! // always track, maybe move this to the 'after' logic if we split function.
-					if(msg.put && msg.err){ return false } // stop relaying a invalid message, like failed SEA.
+					if(msg.put && (msg.err || (dup.s[id]||'').err)){ return false } // stop relaying a invalid message, like failed SEA.
 					if(!(hash = msg['##']) && u !== msg.put && !meta.via && ack){ mesh.hash(msg, peer); return } // TODO: Should broadcasts be hashed?
 					if(!(raw = meta.raw)){ mesh.raw(msg, peer); return }
 					S && console.STAT && console.STAT(S, +new Date - S, 'say prep');
diff --git a/lib/stats.js b/lib/stats.js
index c83dcdf8..6de79476 100644
--- a/lib/stats.js
+++ b/lib/stats.js
@@ -6,6 +6,7 @@ Gun.on('opt', function(root){
 	if(typeof process === 'undefined'){ return }
 	if(typeof require === 'undefined'){ return }
 	if(false === root.opt.stats){ return }
+	var file = root.opt.file || 'radata';
 	var noop = function(){};
 	var os = require('os') || {};
 	var fs = require('fs') || {};
@@ -21,7 +22,7 @@ Gun.on('opt', function(root){
 	os.cpus = os.cpus || noop;
 	var obj_ify = function(o){try{o = JSON.parse(o)}catch(e){o={}};return o;}
 	setTimeout(function(){
-		root.stats = obj_ify((fs.existsSync(__dirname+'/../stats.'+root.opt.file) && fs.readFileSync(__dirname+'/../stats.'+root.opt.file).toString())) || {};
+		root.stats = obj_ify((fs.existsSync(__dirname+'/../stats.'+(root.opt.file||file)) && fs.readFileSync(__dirname+'/../stats.'+(root.opt.file||file)).toString())) || {};
 		root.stats.up = root.stats.up || {};
 		root.stats.up.start = root.stats.up.start || +(new Date);
 		root.stats.up.count = (root.stats.up.count || 0) + 1;
@@ -40,6 +41,7 @@ Gun.on('opt', function(root){
 		stats.memory.freemem = os.freemem();
 		stats.cpu = process.cpuUsage() || {};
 		stats.cpu.loadavg = os.loadavg();
+		stats.cpu.stack = (((setTimeout||'').turn||'').s||'').length;
 		stats.peers = {};
 		stats.peers.count = Object.keys(root.opt.peers||{}).length; // TODO: .keys( is slow
 		stats.node = {};
@@ -58,8 +60,8 @@ Gun.on('opt', function(root){
 		}
 		console.STAT && console.STAT(S, +new Date - S, 'stats');
 		S = +new Date;
-		JSON.stringifyAsync(stats, function(err, raw){ if(err){ return }
-			fs.writeFile(__dirname+'/../stats.'+root.opt.file, raw, function(err){ console.STAT && console.STAT(S, +new Date - S, 'stats stash') });
+		JSON.stringifyAsync(stats, function(err, raw){ console.log("stats?", err, __dirname+'/../stats.'+(root.opt.file||file)); if(err){ return }
+			fs.writeFile(__dirname+'/../stats.'+(root.opt.file||file), raw, function(err){ console.STAT && console.STAT(S, +new Date - S, 'stats stash') });
 		});
 		stats.over = S;
 		stats.gap = {};