Issue with template editor, undefined variable

[phpBB Debug] PHP Notice: in file /includes/acp/acp_styles.php on line 748: Undefined variable: super

This is the error returned upon submitting an edit to a template file. The file that is being edited is physically set as chmod 0644, so I'd believe it should be trying to store the info in the database. However, this isn't working out, as there seems to be an error throwing the entire process off.