gpg: [don't know]: invalid packet (ctb=7a)

[LinuxmanX]

Hello,

I'm running GPG on my Mac (10.4.10). Due to a power failure it powered
off while optimizing the volume.
After the crash I realized that GPG is corrupted :-/

Here you can see the complete error message:
darwin: Rob$ gpg --list-keys
gpg: [don't know]: invalid packet (ctb=7a)
gpg: keydb_search_first failed: invalid packet



I searched for "ctb=7a" but I found nothing regarding this error.
"ctb=00", "ctb=03" and so on are listed everywhere but not the one above.

Can anyone help me? If I have chosen the wrong list - sorry! But then
tell me were I can help, please.

Bye,
Rob