Notice that the Host Name field is editable. You must change the name by replacing the asterisk with the the actual machine name. If the machine is named "GPSERVER", then you would replace the asterist with gpserver, so the value in the field is:
gpserver.mydomain.com
You probably want to get rid of the other stuff at the end of the name, since that's not part of the host name.
That's the original answer that was provided earlier in the thread. With a wildcard certificate, you as the person installing, must replace the asterisk with the machine name. The installer can't get the name from the certificate, because the machine name is never in a wildcard certificate.
Replace the asterisk with the machine name, get rid of the extra stuff (the comma and other values) at the end of the name, and you should be able to continue.