http://boinc.umiacs.umd.edu/

I saw the older thread here about Lattice that seems to have ended in 2007. Right now this project seems to be working, all servers are reported up, and it is listed under GridRepublic (and the stats there show that it is getting recent Tflops), so I was able to add it to my BOINC machines using GridRepublic. I'd like to switch to BAM!, but that would mean losing this project. Any chance adding it?

The Lattice Project is already added. You can check it here.
If your computer doesn't attach to the project when syncing with BAM, you should try first linking your account at the Sign-up for projects page.

I was being blind. I had looked for "Lattice" on the sign-up page, not "The Lattice Project". I should have used the browser's search function instead of my aging eyes after midnight...

Don't worry, everybody has errors. It's difficult to remember a project's exact name when there are so many projects.