I was being good! I was upgrading software in response to a security announcement! It's not my fault I'm a moron. Well, ok, maybe it is. But it works now, kinda, though I've lost the look and feel of the great mango, but that can be fixed a hell of a lot more easily than reimporting / albuming / captioning 3,000 pictures. Really.
Backups. Backsups. Will be setting up backups, methinks.