Symptoms:
An error occurs when selecting MIME Types from Management > Administration > Customization.
Explanation:
The problem pertains to the database upgrade script: a missing check causes an unwanted row to appear in the mediaTypes and mediaTypeMappings tables.
Resolution:
You can fix the issue by deploying the update to WorldServer 10.4.4, available on FTP.
If you cannot deploy it, contact the SDL Support Team…