The toolkit demo says this:
" The callouts do not currently display automatically after a server post-back and will only work for custom validators which utilize client-side validation. Even after a post-back the callout will display when the form is re-validated when a postback is attempted again."
It has said this since the control was released. Will the validator callout ever support server-side validation? Is there a way to force the callout to display after a server-side validation?