updated install.js to install mongodb native 2

src/install.js

@@ -13,7 +13,7 @@ var async = require('async'),
 			"dependencies": ["redis@~0.10.1", "connect-redis@~2.0.0"]
 		},
 		"mongo": {
-			"dependencies": ["mongodb", "connect-mongo"]
+			"dependencies": ["mongodb@~2.0.0", "connect-mongo"]
 		}
 	};
 

src/middleware/middleware.js

@@ -388,6 +388,11 @@ middleware.processRender = function(req, res, next) {
 		}
 
 		render.call(self, template, options, function(err, str) {
+			if (err) {
+				winston.error(err);
+				return fn(err);
+			}
+
 			// str = str + '<input type="hidden" ajaxify-data="' + encodeURIComponent(JSON.stringify(options)) + '" />';
 			str = (res.locals.postHeader ? res.locals.postHeader : '') + str + (res.locals.preFooter ? res.locals.preFooter : '');