Hi Mo
Thanks for your speedy reply. I was running version 0.1.0, so just updated to 0.2.0 (though could have sworn I downloaded them from the same place...)
Have flushed all I can think of (db, dv, menus page, admin page), but am seeing a new problem now:
When I go to menus, I see Custom Menus in the left pane, but when I click on one of the menus it loads up a page in the right pane - seems to be corresponding the custom menu item with the equivalent page in the list. I know these are linked because when I make a change to one of these and then go to the content tab that change is still there.

Does it help if I make you a guest login? This is a test site so doesn't matter if stuff gets broken.

Ok, I think I have identified this issue as a conflict with CMS Workflow. Carol, can you confirm if you are using this module?

Cheers,

Mo

Hmm, I think I don't really use Userforms very often, its more than possible that they are both causing a similar conflict.

Ugh, this is not going to be fun to debug... So much AJAX, not enough time! :s

Brilliant, crossing fingers must have worked!
Thanks heaps!

Just one more thing you should know; not a problem for me but suspect you will want to fix it:
When I delete menus from the left hand pane, it tells me that delete has failed and the menu still seems to be there, though when I refresh the admin page, the deleted menus are gone.