Integer-type Popups Question fails: "can not start user interface"

Pharos 7.1 Popups fails with the error message: "can not start user interface" after I set up an Integer-type Question.

This is a known issue in Pharos Uniprint 7.1 and will be fixed at the time of the next product release.

Customers should use a Float-type Popup Question that achieves the same result when asking questions via the Popup Client.