Survey gives "RESPONSE ERROR" message on page with only Slider Elements

Survey gives "RESPONSE ERROR" message on page with only Slider Elements

While testing my embedded <iframe> survey form today I received a "Response Error".

The same page consistently produces the error on "next" button press.

The page (page 4 of 8), contains only slider elements plus one description element.

I believe the submission error may be caused by the same issue that causes the final (largest) slider value to NOT appear in the report.

It's likely to be a simple miscalcuation:

Example:

UpperValue = 10
LowerValue = 0

DataPoints = Uppervalue-Lowervalue

// in the above instance the result would be 10 but should be 11 so that the point is included

should be 

DataPoints = (UpperValue-LowerValue) +1