Updating the Slidedeck plugin to version 1.4.2 broke my site. I got PHP warnings about “file get content cannot be empty”, or something like that.
Much to my irritation, there’s also no way to downgrade back to version 1.4.1, although that wouldn’t have solved anything.
The problem is that the ‘skins’ folder containing my custom slidedeck skin was overwritten, so it could no longer find the active skin. Replacing this folder from the backup on my local development copy solved the problem.