Mark,
As mentioned before, 11d cannot be upgraded from 8.x. Is your server clean now, or are you trying to upgrade from 8.x?
If you are trying to upgrade from 8.x, then you need to either uninstall and reinstall fresh, or upgrade to 9 or 10 and then 11.
If you are starting with a fresh server, the you will need to log a support case to track down why 11d thinks there is 8.x on the system.
Thanks,
Daniel