ai1ec_style-css not found

Hi,

After updating wordpress and the plugin to the latest verison, I keep getting an error that ai1ec_style-css is not being found.

:formatted:120GET https://commonground.co.za/wp-content/plugins/all-in-one-event-calendar/cache/430a53ee_ai1ec_parsed_css.css?ver=2.5.6 404 (Not Found)
2016-07-11 12:30:18.062 jquery-1.7.2.min.js?ver=4.5.2:4 XHR finished loading: GET “https://commonground.co.za/wp-admin/admin-ajax.php?postviews_id=24&action=postviews&_=1468233017286”.send @ jquery-1.7.2.min.js?ver=4.5.2:4f.extend.ajax @ jquery-1.7.2.min.js?ver=4.5.2:4(anonymous function) @ postviews-cache.js?ver=1.68:1

https://www.ads-software.com/plugins/all-in-one-event-calendar/