Certificate won't install

[IT_Architect]

Hi,

The server had a shared certificate that has long since expired. It used the www prefix. This time I decided to follow the tutorial posted here and make it secure.mydomain.com instead of www. I inserted an A record into the DNS for secure, generated a CSR for secure.mydomain.com, and purchased a new cert. When I pasted it in under the key, and saved it, it returned the error:

Could not excute your request
Details
You do not own that domain

That's my problem. Any ideas as to what might be wrong?

Thanks!

 

[IT_Architect]

After the error, I added a separate domain, secure.mydomain.com. The cert will not install in the new secure.mydomain.com area, but it will in the mydomain.com where it wouldn't before, and where I generated the CSR.
My questions are:
1. If I get a new cert for the separate domain, do I then need to register secure.mydomain.com?
2. If I stick with my current cert, what do I need to hack in the config files to make it work for a server cert?

Thanks!