Fix infinite recursive loop _findFileInRoot

www/common/userObject.js

@@ -353,11 +353,13 @@ define([
                 }
                 return paths;
             }
+            if (isFolder(root)) {
                 for (var e in root) {
                     var nPath = path.slice();
                     nPath.push(e);
                     _findFileInRoot(nPath, file).forEach(addPaths);
                 }
+            }
 
             return paths;
         };