I cannot create a new mortgage loan in Quicken - R30.19

Since mid-December I've tried to create a new mortgage but get stuck in an endless loop at the 'Create Payment Reminder' screen. Once I click Next on the Create Reminder popup, I'm simply returned to the 'Create Payment Reminder' screen and cannot advance. I see the mortgage has been created on the dashboard in the background, but I'm forced to hit Cancel and it gets undone. Per Support, I've tried to Validate the data file and just today applied the latest US Mondo patch ... neither has worked. Any ideas?