Verified Detached Signed file
Verifying the detached signature from a file and from the Key Store. This one may be a little awkward but it requires the public key to be in a file as well as in the Key Store. On the program there is a little note that basically tells you if the public key isn't in the Key Store that it will be imported into the Key Store. This function does two checks.
So now, select the User Id by right clicking on the user, locate the original signed file, the signature file and the corresponding public key file. Click the "Verifying" button and presto... Signature OK.