Hi, guys, anyone having somewhere the old Espers-qt.exe ? (from the first days of Espers)

I was out of the altcoin ecosystem for months, and now I'm trying the new Espers-qt.exe client, and it cannot read my old Espers wallet I had backed up. ("Warning: error reading wallet.dat! All keys read correctly, but transaction data or address book entries might be missing or incorrect.") and exits. Plus, I've  lost the old Espers-qt.exe file.

Has the Espers coin changed? Can I do anything with my old Espers, or they are burned for ever? Any idea?