Cannot revoke a certificate

[David]

I am trying to revoke a very old certificate that may be compromised.  I
generated a revocation certificate using the following gpg command with
no errors.  I did get a warning about MD5 being deprecated.

C:\Users\David> gpg --output kill7827.asc --gen-revoke 80942C8D
 
However, I cannot use it.  Here is the output:

C:\Users\David> gpg --import .\kill7827.asc
gpg: Note: signatures using the MD5 algorithm are rejected
gpg: key 80942C8D: invalid revocation certificate: Invalid digest
algorithm - rejected
gpg: error reading `.\\kill7827.asc': Invalid digest algorithm
gpg: import from `.\\kill7827.asc' failed: Invalid digest algorithm
gpg: Total number processed: 0
C:\Users\David>

How do I force gpg to accept the revocation?  Or, how do I revoke the
old key?

Win10
GnuPG 2.0.29 (Gpg4Win 2.3.0)

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