almost everything for #2335

src/categories.js

@@ -50,13 +50,14 @@ var db = require('./database'),
 				imageClass: 'auto'
 			};
 
-			db.setObject('category:' + cid, category, function(err) {
-				if(err) {
+			async.series([
+				async.apply(db.setObject, 'category:' + cid, category),
+				async.apply(db.sortedSetAdd, 'categories:cid', data.order, cid)
+			], function(err) {
+				if (err) {
 					return callback(err);
 				}
 
-				db.sortedSetAdd('categories:cid', data.order, cid);
-
 				callback(null, category);
 			});
 		});