Content Won't Play In Any player

Did the upgrade to the latest version. Now my content will not play in any HTML5 Studio Player.

Here is the error from my browser’s console…

"kWidget: Kaltura HTML5 Version: 2.27" 101:47
HTTP "Content-Type" of "text/html" is not supported. Load of media resource http://ec2-54-172-77-66.compute-1.amazonaws.com/p/101/sp/10100/playManifest/entryId/0_wc0nrme5/flavorId/0_wdzl8pl0/format/url/protocol/http/a.mp4?referrer=aHR0cDovL2VjMi01NC0xNzItNzctNjYuY29tcHV0ZS0xLmFtYXpvbmF3cy5jb20=&ks=YzBmYjA5NWY5NTMyNDkxNGVjYTUwN2RhYzgzMGYxZGIyMWMxM2I0MnwxMDE7MTAxOzE0MjQxMzQ2MjE7MjsxNDI0MDQ4MjIxLjQ2NDg7a3ZlZGRlckB3dGx3LmNvbTtkaXNhYmxlZW50aXRsZW1lbnQ7Ow==&clientTag=html5:v2.27&uiConfId=23448423 failed. dynamic

When doing this:
# curl -I -v http://ec2-54-172-77-66.compute-1.amazonaws.com/p/101/sp/10100/playManifest/entryId/0_wc0nrme5/flavorId/0_wdzl8pl0/format/url/protocol/http/a.mp4

I see:
< X-Kaltura-App: exiting on error 1 - requested entry not found
X-Kaltura-App: exiting on error 1 - requested entry not found

Start by looking at ‘batch process control’ tab in the admin console, put in the entry ID and check for errors.