When I changed the Authentication profile for a DataPage, on the "Web Form Wizard - DataPage DataSource" page, it changed, the "Web Form Wizard - Single Record Update" setting to "Find record through Record Level Security", which means the app lost the ID it needed to pull up the entire record for the DataPage. The error was "No records found"
Caspio forced the change, not me. Just be careful. This bug took me a little time to find.
The graphic is the screenshot of where the fix was made.