[HS] "No databases found" -- looks like my PDB file got corrupted!

Hi all,
Long time HandyShopper user in need of some help!

Device: Dell Axim X3i (WM2003, ARM)
HandyShopper version: v3.2 build 6516
database file: "HS2_Pam.pdb", file size 68kb (<-"HS2" because the db was created years ago, before upgrade to latest version).

Problem: this grocery list database had been in use for years without issue, but on March 23rd when I went to open HS, HS reported "no databases found". The file exists in the usual location on the device, but I am unable to open it on my PDA or with hs3convert.exe on my Windows PC.

Is it at all possible to repair the file, or at least access and retrieve any of the data within it?

I've uploaded the file(zipped) in the hopes that someone out there might be kind enough to take a look and have more success than me:
http://www.sendspace.com/file/re7gq6

Even if the database & contents are lost, I'm wondering why it might suddenly become "not found"/un-openable. I seem to have had a bad day with devices losing settings, this was the 3rd thing today to go mysteriously wrong!

Thanks for looking!
DanB