If you look at 'todo.html' from the 'Resources and Infrastructure' section,
clicking on to this page changes the main 'Developers' tab back to the old
Name of 'Project'  - and then the sub-level tabs problem comes back too.

On top of this, apart from in my site-author 'build' and 'work' directories
I see no source file for this todo file. Is this related?

Gav...