Home › Forums › MapPress Support › Version 2.42.1 throwing 500 error from admin-ajax.php › Reply To: Version 2.42.1 throwing 500 error from admin-ajax.php
I don’t think it’s jQuery, and MapPress is compatible with WP 4.1. Could this be the same problem you had back in May?
The error means the server crashed. Usually that’s because of a syntax error in a PHP file.
If you check your PHP error log, it will show you exactly where the error occurred. Or, to rule out another plugin or a conflict: deactivate all other plugins and switch to a standard theme (like 2014) for a moment and see if the error persists.