A whole number between 0 and 100 is required Refine Tool

[thorstent40082701]

A whole number between 0 and 100 is required
When refining the mask, I very often get this message.
Does anyone know the problem?

[thorstent40082701]

[Stephen Marsh]

I'm not in front of Photoshop, however the following doesn't appear to be an integer/whole number as per the error message:

 

[thorstent40082701]

Thanks I will increase the radius to see if the message is gone