Change guid to uuid.

core/domains/app_config.php

@@ -2,7 +2,7 @@
 
 	//application details
 		$apps[$x]['name'] = "Domains";
-		$apps[$x]['guid'] = "8b91605b-f6d2-42e6-a56d-5d1ded01bb44";
+		$apps[$x]['uuid'] = "8b91605b-f6d2-42e6-a56d-5d1ded01bb44";
 		$apps[$x]['category'] = "Core";
 		$apps[$x]['subcategory'] = "";
 		$apps[$x]['version'] = "1.0";