I updated my 2.0.4 system to 2.1

Now when I go to https://mymailserver.com:8300 I get the certificate, I
accept it. Nothing. I can see my index.htm is there, reminted certs,
just to be sure. Deleted and recreated the client package. Yet no
download page.

the error I get is,

The page isn't redirecting properly

Firefox has detected that the server is redirecting the request for this
address in a way that will never complete.

* This problem can sometimes be caused by disabling or refusing
to accept cookies.

Any ideas?
Thanks, Mr. Beer