How can I administer my Lion Server from a Mountain Lion client I have a Mac OS X Lion (10.7) server, and I would like to administer it remotely from a client running Mountain Lion non-server (10.8).

I naively assumed that I could install the freely downloaded Server Admin Tools 10.7 on Mountain Lion, however it does not let me install Server Admin Tools 10.7.4, and does not let me run Server Admin Tools 10.7. 

I have downloaded OS X Server for Mountain Lion. When I run the Server app and try to connect to my Lion server, it says "Server requires OS X 10.8." and "The server you’re trying to connect to is not running OS X 10.8. Install OS X 10.8 on the server and try again."

Screen sharing works, but I really hoped I could administer my server natively and locally like I used to be able to from a Lion client. 

It really should not be this difficult!
This seems to be an instance where Apple's push for the latest and greatest causes real world IT issues.

Per Apple's support article, HT1822 - OS X Server: Admin tools compatibility information, using Server Tools for mismatched client and server OS versions just isn't supported:


  To administer Lion Server from a client with a different version of OS X, connect to the server using Screen Sharing or Apple Remote Desktop. You can also use Workgroup Manager 10.8 on Mountain Lion to connect to Lion Server.


I'm not sure how useful Workgroup Manager is to you, but it may be of some value.

There's also using the command line tools over SSH, which may or may not be more desirable than Screen Sharing/Remote Desktop to you. Apple's Advanced Lion Administration guide has info on how to use the command line tools for most tasks