coleislazy pointed out that last night's patch had an error in switching the workspace, but this would only show up for fresh installs, not for folks (like us) who had continually updated with patches along the way.
We've updated the update with a fix, so if it's something that you care about and use, you may want to execute a reupgrade to grab it. We'll probably put out a 1.1.1 in not too long a time (next week?) with more hotfixes.