Importing backed up private key, gpg: [don't know]: partial length invalid for packet type 20

Question

I've imported a private key that I've backed up on my Macbook, however, I get this message when I try to decrypt the files that were encrypted using the public key paired with my own private key.

I'm not quite sure what the message means, I am not able to decrypt my own files

What I did:

gpg --output test --decrypt CompletedList.csv.secret 

What I got:

gpg: [don't know]: partial length invalid for packet type 20

Answer 1

Check first the output of gpg -vvd --output test --decrypt CompletedList.csv.secret in order to get more details.

Check also:

• your version of GPG (considering gpg1 vs. gpg2 might not be compatible), and
• its configuration (~/.gnupg/gpg.conf) for any peculiar setting.