Enrique,
I have been looking for this class also. It appears in documentation but not in the currently shipping libraries. I too am curious why it is missing.

Roy

>Hi!
>
>I wont to use the cbizobjtreeviewform form but appear an error message. Not registered class. Do you know why?
>
>Another, To but the lastest MM version I need a international credit card or there are another form. I'm in Mexico.
>
>Thanks.
>
>Enrique Ramírez L.