Backups are usually in place, just not this time.
I have been sifting through all the data I have, and I am starting to think there might be a way to rebuild the data. All the album owners/names are intact, so it looks like I have all my albums but they are all empty. Since each album has a unique ID, and each ID corresponds to a folder with a user's images- wouldn't it be possible to author a repair script which will scan this information and rebuild the necessary data? I don't know enough about how Photopost links a user to files on the hard drive, but I have this information- it just needs to be connected.
Is this an impossible line of thinking? Photopost is a pain to work with, but hopefully I can work through this the hard way.