Plugin has stopped working – doesn't save

The “Save Override” button doesn’t seem to work anymore across multiple websites that I use this plugin on.

The only error is the following browser message from the script console, otherwise nothing happens when you press the button (no refresh or error displayed).

Timestamp: 28/01/2015 2:28:24 pm
Error: Error: Syntax error, unrecognized expression: select[name=file_to_override
Source File: http://www.abeckgroup.com.au/wp-admin/load-scripts.php?c=1&load%5B%5D=jquery-core,jquery-migrate,utils&ver=4.1
Line: 2

https://wordpress.org/plugins/wp-template-overrides/