This statemetn, entered via "advanced" criteria of a view, used to be accepted and is indeed used within two of my views
(zoho.loginuser == CenterCode.UserName && SendTo == "Participant")

Now I get the message
Adding Criteria failed. Please try after some time or refresh the page and try again.

and thi happens on new views I am defining BUT also on the ones where it used to work if I try to save them again !!!

Please help as soon as possible. Thanks.