I'm trying to get popup pro to work on one of my sites

Hi,

I’m trying to get popup pro to work on one of my sites and among the errors, I get this warning in load-scripts.php line 5. is this something that would prevent it from working? this is in Chrome 46.0.2490.86

Synchronous XMLHttpRequest on the main thread is deprecated because of its detrimental effects to the end user’s experience. For more help, check http://xhr.spec.whatwg.org/.

https://teamtiffanys.organictrader.com.au/wp-admin/load-scripts.php?c=0&load%5B%5D=jquery-core,jquery-migrate,utils&ver=4.3.1 Failed to load resource: the server responded with a status of 404 (Not Found)send @ load-scripts.php:5