Hi @jess
Even after updating to the latest version of Kaltura I am still finding the following errors in the 'kaltura_apache_errors_ssl.log':
[Mon Jan 04 04:42:38 2016] [error] [client 207.46.13.57] script '/opt/kaltura/web/html5/html5lib/v2.38/mwEmbedLoader.php' not found or unable to stat
[Mon Jan 04 05:44:50 2016] [error] [client 180.153.214.176] script '/opt/kaltura/web/html5/html5lib/v2.38/mwEmbedLoader.php' not found or unable to stat
[Mon Jan 04 12:27:25 2016] [error] [client 69.88.44.114] script '/opt/kaltura/web/html5/html5lib/v2.38/mwEmbedLoader.php' not found or unable to stat, referer: http://site_with_all-in-one_installed.com/
[Mon Jan 04 12:27:25 2016] [error] [client 69.88.44.114] script '/opt/kaltura/web/html5/html5lib/v2.38/mwEmbedLoader.php' not found or unable to stat, referer: http://site_with_all-in-one_installed.com/
Resulting in the player not loading on any site linked to this instance of Kaltura.