Missing Value in Numeric Crashes App

I had a numeric control on my form that I missed setting the value to a database field. When I ran the app and entered a number in the control it crashed the app. If this end result is possible, then some sort of warning that a control is missing a value would help in reducing the time it takes to find and fix a problem like this.

You need RequiredValidator for this field/component.

It wasn't a required database field. The problem was that I forgot to enter the corresponding database field in the value setting and that created the issue when I ran the app.