It seems that there is a problem either with the WordPress install or the Baskerville theme I am using as it has suddenly stopped handling post formats correctly.  At the moment, video and quotes don’t show anything and I can’t create new ones.

Bear with me while I look into it!

Update:

The issue was traced to an update in the WordPress theme the site uses cause by updates to comply with the latest WordPress version.  I have had to manually edit all posts with link, video or quote formatting to get them to work again.

For anyone running Baskerville in WordPress, the themes author explains the changes needed on his blog.