diff --git a/helpers/artifact_converter.js b/helpers/artifact_converter.js
index 450ca43792f4ec47284236f7c06dedd2c0b1bd00..ec86e1ffdea0b98785a4d1f324cb873c0f3672c2 100644
--- a/helpers/artifact_converter.js
+++ b/helpers/artifact_converter.js
@@ -92,14 +92,14 @@ function createWaveform(fileName, localFilePath, callback){
   });
 }
 
-function convertVideo(fileName, filePath, codec, callback, progress_callback) {
+function convertVideo(fileName, filePath, codec, callback, progressCallback) {
   var ext = path.extname(fileName);
   var presetMime = mime.lookup(fileName);
 
   var newExt = codec == "mp4" ? "mp4" : "ogv";
   var convertedPath = filePath + "." + newExt;
 
-  console.log("converting", filePath, "to", convertedPath, "progress_cb:",progress_callback);
+  console.log("converting", filePath, "to", convertedPath);
 
   var convertArgs = (codec == "mp4") ? [
     "-i", filePath,
@@ -134,8 +134,8 @@ function convertVideo(fileName, filePath, codec, callback, progress_callback) {
 
   ff.stderr.on('data', function (data) {
     console.log('[ffmpeg-video] stderr: ' + data);
-    if (progress_callback) {
-      progress_callback(data);
+    if (progressCallback) {
+      progressCallback(data);
     }
   });
 
@@ -280,7 +280,7 @@ var resizeAndUploadImage = function(a, mimeType, size, fileName, fileNameOrg, im
 };
 
 module.exports = {
-  convert: function(a, fileName, localFilePath, payloadCallback, progress_callback) {
+  convert: function(a, fileName, localFilePath, payloadCallback, progressCallback) {
     getMime(fileName, localFilePath, function(err, mimeType){
       console.log("[convert] fn: "+fileName+" local: "+localFilePath+" mimeType:", mimeType);
 
@@ -311,8 +311,8 @@ module.exports = {
                 var s3Key = "s"+ a.space_id.toString() + "/a" + a._id.toString() + "/" + fileName;
 
                 uploader.uploadFile(s3Key, "image/gif", localFilePath, function(err, url) {
-                  if(err)callback(err);
-                  else{
+                  if (err) payloadCallback(err);
+                  else {
                     console.log(localFilePath);
                     var stats = fs.statSync(localFilePath);
 
@@ -357,8 +357,8 @@ module.exports = {
             thumbnail: function(callback) {
               createThumbnailForVideo(fileName, localFilePath, function(err, created){
                 console.log("thumbnail created: ", err, created);
-                if(err) callback(err);
-                else{
+                if (err) callback(err);
+                else {
                   var keyName = "s" + a.space_id.toString() + "/a" + a._id.toString() + "/" + fileName + ".jpg" ;
                   uploader.uploadFile(keyName, "image/jpeg", created, function(err, url){
                     if (err) callback(err);
@@ -380,7 +380,7 @@ module.exports = {
                       else callback(null, url);
                     });
                   }
-                }, progress_callback);
+                }, progressCallback);
               }
             },
             mp4: function(callback) {
@@ -396,7 +396,7 @@ module.exports = {
                       else callback(null, url);
                     });
                   }
-                }, progress_callback);
+                }, progressCallback);
               }
             },
             original: function(callback){
@@ -404,7 +404,7 @@ module.exports = {
                 callback(null, url);
               });
             }
-          }, function(err, results){
+          }, function(err, results) {
             console.log(err, results);
 
             if (err) payloadCallback(err, a);
@@ -438,19 +438,16 @@ module.exports = {
               db.packArtifact(a);
 
               a.updated_at = new Date();
-              a.save(function(err) {
-                if (err) payloadCallback(err, null);
-                else {
-                  fs.unlink(localFilePath, function (err) {
-                    if (err){
-                      console.error(err);
-                      payloadCallback(err, null);
-                    } else {
-                      console.log('successfully deleted ' + localFilePath);
-                      payloadCallback(null, a);
-                    }
-                  });
-                }
+              a.save().then(function() {
+                fs.unlink(localFilePath, function (err) {
+                  if (err) {
+                    console.error(err);
+                    payloadCallback(err, null);
+                  } else {
+                    console.log('successfully deleted ' + localFilePath);
+                    payloadCallback(null, a);
+                  }
+                });
               });
             }
           });
diff --git a/routes/api/space_artifacts.js b/routes/api/space_artifacts.js
index d7d7bbec23fcc39b91fadda634aeefc2b7687f8a..4cb583639861f4220a922c9e0d024b461772fa39 100644
--- a/routes/api/space_artifacts.js
+++ b/routes/api/space_artifacts.js
@@ -123,11 +123,11 @@ router.post('/:artifact_id/payload', function(req, res, next) {
     var writeStream = fs.createWriteStream(localFilePath);
     var stream = req.pipe(writeStream);
 
-    var progress_callback = function(progress_msg) {
-      a.description = progress_msg.toString();
+    var progressCallback = function(progressMsg) {
+      a.description = progressMsg.toString();
       db.packArtifact(a);
       a.save();
-      redis.sendMessage("update", a, JSON.stringify(a), req.channelId);
+      redis.sendMessage("update", "Artifact", a, req.channelId);
     };
 
     stream.on('finish', function() {
@@ -137,7 +137,7 @@ router.post('/:artifact_id/payload', function(req, res, next) {
           db.Space.update({ updated_at: new Date() }, {where: {_id: req.space._id}});
           res.distributeUpdate("Artifact", artifact);
         }
-      }, progress_callback);
+      }, progressCallback);
     });
   } else {
     res.status(401).json({