concat:generated can be created if config.css is in use.

@@ -793,7 +793,7 @@ module.exports = function (grunt) {
                 revList.push('rev:font');           // font
             }
             //buildList.push('autoprefixer');     // css
-            if (mpConfig.punch) {
+            if (mpConfig.punch || mpConfig.css) {
                 copyList.push('concat:generated');         // montyPython
             }
             if (mpConfig.uglify) {