New to Zoho-CRM Cases-Unable to process your request

New to Zoho-CRM Cases-Unable to process your request

When I try to enter a Case in CRM, i enter all the data, then save and it gives me "Unable to process your request" Click here to go back.

We are trying out Zoho to determine if we want to invest for all the users in our company, though this is a show stopper.  Please help.

Thanks,

Nick Manning
PRIER Products, Inc.