Comment 1 for bug 708656

Jeremy Davis (jedmeister) wrote :

Seems like the bug occurs because the TKL created 'AdminUser' account does not quite have full admin privileges (this is my assumption - not based on research).

There has been a fix proposed here: http://www.turnkeylinux.org/forum/support/20101222/twiki-installed-cant-add-new-webs#comment-9353

There is also a temporary workaround noted on that thread as well (although obviously the fix is the better way to go).