diff --git a/src/Umbraco.Web.UI.Client/src/common/services/assets.service.js b/src/Umbraco.Web.UI.Client/src/common/services/assets.service.js
index b3a42788ca..7d5254b1f5 100644
--- a/src/Umbraco.Web.UI.Client/src/common/services/assets.service.js
+++ b/src/Umbraco.Web.UI.Client/src/common/services/assets.service.js
@@ -44,6 +44,17 @@ angular.module('umbraco.services')
 .factory('assetsService', function ($q, $log, angularHelper, umbRequestHelper, $rootScope, $http) {
 
     var initAssetsLoaded = false;
+    var appendRnd = function(url){
+        //if we don't have a global umbraco obj yet, the app is bootstrapping
+        if(!Umbraco.Sys.ServerVariables.application){
+            return url;
+        }
+
+        var rnd = Umbraco.Sys.ServerVariables.isDebuggingEnabled ?  (new Date()).getTime() : Umbraco.Sys.ServerVariables.application.version +"."+Umbraco.Sys.ServerVariables.application.cdf;
+        var _op = (url.indexOf("?")>0) ? "&" : "?";
+        url = url + _op + "umb__rnd=" + rnd;
+        return url;
+    };
 
     return {
         
@@ -85,29 +96,23 @@ angular.module('umbraco.services')
          * @param {Number} timeout in milliseconds
          * @returns {Promise} Promise object which resolves when the file has loaded
          */
-        loadCss : function(path, scope, attributes, timeout){
-            var deferred = $q.defer();
-            var t = timeout || 5000;
-            var a = attributes || undefined;
+         loadCss : function(path, scope, attributes, timeout){
+             var deferred = $q.defer();
+             var t = timeout || 5000;
+             var a = attributes || undefined;
 
-            yepnope({
-                 forceCSS: true,
-                 load: path,
-                 timeout: t,
-                 attrs: a,
-                 callback: function (url, result, key) { 
-                   if (!scope) {
-                       deferred.resolve(true);
-                   }else{
-                       angularHelper.safeApply(scope, function () {
-                           deferred.resolve(true);
-                       });
-                   }
-                 }
-               });
+             yepnope.injectCss(appendRnd(path), function () {
+                 if (!scope) {
+                      deferred.resolve(true);
+                  }else{
+                      angularHelper.safeApply(scope, function () {
+                          deferred.resolve(true);
+                      });
+                  }
+             },a,t);
 
-            return deferred.promise;
-        },
+             return deferred.promise;
+         },
         
         /**
          * @ngdoc method
@@ -127,30 +132,8 @@ angular.module('umbraco.services')
             var deferred = $q.defer();
             var t = timeout || 5000;
             var a = attributes || undefined;
-
-
-/*            
-            yepnope({
-              forceJS: true,
-              load: path,
-              timeout: t,
-              attrs: a,
-              callback: function (url, result, key) {
-                
-                if (!scope) {
-                    deferred.resolve(true);
-                }else{
-                    angularHelper.safeApply(scope, function () {
-                        deferred.resolve(true);
-                    });
-                }
-              }
-            });
-*/
-
-
-            yepnope.injectJs(path, function () {
-
+            
+            yepnope.injectJs(appendRnd(path), function () {
               if (!scope) {
                   deferred.resolve(true);
               }else{
@@ -158,7 +141,6 @@ angular.module('umbraco.services')
                       deferred.resolve(true);
                   });
               }
-
             },a,t);
 
 
@@ -181,14 +163,14 @@ angular.module('umbraco.services')
          */
         load: function (pathArray, scope) {
             var deferred = $q.defer();
-           
+        
             var nonEmpty = _.reject(pathArray, function(item) {
                 return item === undefined || item === "";
             });
 
+
             //don't load anything if there's nothing to load
             if (nonEmpty.length > 0) {
-
                 yepnope({
                     load: pathArray,
                     complete: function() {