While attempting to turn on SSL on a newly installed v1.0.4 admin server, click save after enabling SSL and disabling all < 128 bit SSL options, and the above error appears in a dialog. The text of the error has no meaning to the admin, nor is a course of action suggested. Restarting the admin server, and reloading the encryption dialog shows that encryption isn't enabled for the new v1.0.4 admin server instance.
Looks like we broke this in 1.0.3/1.0.4. The work around is pretty easy - just use certutil from the command line to create the admin server key/cert databases. Alternately, use the script and methods at http://directory.fedora.redhat.com/wiki/Howto:SSL to setup your servers to use SSL.
*** Bug 215696 has been marked as a duplicate of this bug. ***
*** Bug 215697 has been marked as a duplicate of this bug. ***
*** Bug 215698 has been marked as a duplicate of this bug. ***
The new directory server will create the admin server key/cert db during setup so this is not a problem anymore.