Fix upgrade queries for optional plugins

qa-include/qa-install.php

@@ -139,6 +139,7 @@ if (isset($pass_failure_type)) {
 else {
 	// this page was requested by user GET/POST, so handle any incoming clicks on buttons
 	qa_db_connect('qa_install_db_fail_handler');
+	qa_initialize_postdb_plugins();
 
 	if (qa_clicked('create')) {
 		qa_db_install_tables();