This update fixes the error that occurs when upgrading from a version older than 20141124. When upgrading, make sure you upload the new MediaBBCodes.php file then upgrade using the newest addon-s9e.xml file from the archive.
Flickr now sniffs a browser's user-agent to display an interstitial message. This interferes with the way a picture's dimensions are retrieved. Starting with this version, Flickr images are now displayed in fixed dimensions: 500 × 500