diff --git a/picoreflowd.py b/picoreflowd.py
index 8d899fc..599371b 100644
--- a/picoreflowd.py
+++ b/picoreflowd.py
@@ -78,8 +78,15 @@ def handle_storage():
             elif msgdict.get("cmd") == "PUT":
                 log.info("PUT command received")
                 profile_obj = msgdict.get('profile')
+                force = msgdict.get('force',False)
                 if profile_obj:
-                    save_profile(profile_obj)
+                    #del msgdict["cmd"]
+                    if save_profile(profile_obj,force):
+                        msgdict["resp"]="OK"
+                    else:
+                        msgdict["resp"]="FAIL"
+                    print "sending:" +str(msgdict)
+                    wsock.send(json.dumps(msgdict))
         except WebSocketError:
             break
     log.info("websocket (storage) closed")
@@ -111,14 +118,19 @@ def get_profiles():
             profiles.append(json.load(f))
     return json.dumps(profiles)
 
-def save_profile(profile):
+def save_profile(profile, force=False):
     profile_json = json.dumps(profile)
     filename = profile['name']+".json"
     filepath = os.path.join(profile_path,filename)
+    if not force and os.path.exists(filepath):
+        print "Didnt write"
+        return False
     with open(filepath, 'w+') as f:
         print filepath
         f.write(profile_json)
         f.close()
+    print "Did write"
+    return True
 
 def main():
     ip = "0.0.0.0"
diff --git a/public/index.html b/public/index.html
index dcff58d..54b0d47 100644
--- a/public/index.html
+++ b/public/index.html
@@ -150,8 +150,8 @@ function enterEditMode() {
     graph.series[0].options.draggableX=true;
     graph.series[0].options.draggableY=true;
     graph.render();
-}
 
+}
 function leaveEditMode() {
     state="IDLE";
     $('#saveas').hide();
@@ -240,11 +240,31 @@ ws_storage.onopen = function()
     ws_storage.onmessage = function(e)
     {
        console.log('Storage MSG:' + e.data);
+      
+       message = JSON.parse(e.data);
 
-       profiles = JSON.parse(e.data);
-
-       console.log("Parsed profile:" + profiles);
-
+       console.log("Parsed message:" + message);
+       
+       if(message.resp)
+       {
+         console.log("RESP");
+         if(message.resp == "FAIL")
+         {
+            console.log("FAIL");
+            if (confirm('Overwrite?')) {
+               //message.cmd="PUT";
+               message.force=true;
+               console.log("Sending: " + JSON.stringify(message));
+               ws_storage.send(JSON.stringify(message));
+            } else {
+               ws_storage.send("GET");
+            }
+         }
+         return;
+       }
+       //the message is an array of profiles
+       //FIXME: this should be better, maybe a {"profiles": ...} container?
+       profiles = message;
         //delete old options in select
         $('#e2')
         .find('option')