The Ares installer may incorrectly try to add existing document types on update.
When adding the document types for mp4, docx, pptx, and xlsx in the update script, it is incorrectly checking for existing records with the same DocumentTypeName and Extension. Since only the DocumentTypeName is a primary key field, an existing record with the same DocumentTypeName but different extension will result in a primary key violation. This has come up with the New School, which had already added an mp4 document type.
Released in Ares 4.6.6