We have Signatures setup in Webacces for users that want them

One one user just can't add a signature

When tick box for Enable Signature is enabled the dropdown box for signature is BLANK

New has no effect except to Clear the Enable Signature tick box!
and save has no effect

Tried Text and Html

With new Account I've noticed there is a --- in the Dropdown box - but NOT for this user!
(probably a default account name perhaps)

Anyway to fix this ?