[Enigmail] Unable To Import Public Key

[Carlos Williams]

I received an email from a user which contained his PGP public key as
an .asc attachment in the email:

>Attached is a PGP Public Key. Import this key
>into your copy of PGP to exchange encrypted and
>signed email. If you do not have PGP, please
>visit http://www.pgp.com for your own copy.

>Attachments : 	Page III.James.Q.ORC1000016239.ID.asc (1.95 KB)

I saved the *.asc file to my PC and then attempted to import this file
and received an error using OpenPGP.

OpenPGP Key Management > File > Import Keys From File

When I select his key that I saved to my PC, I get the following error
and I don't know what I am doing wrong.
Can anyone please assist me and getting this resolved so we both have
each others info and can exchange encrypted email?
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