worked around the OVERFLOW error

I was using SkyTools 3 Pro to try to review the particulars of a possible imaging run. I selected the telescope and camera. I opened the exposure calculator. I changed the humidity value. Noted that the temperature scale set to Celsius, as I normally have it. As I changed the air temperature I received an "exp: OVERFLOW error" in a dialog. And then the digits 21474 appear in the field... Tried to close the dialog but it instantly reappeared. I could not clear the error. I had to kill the app with the Windows Task Manager. Then Paint.NET crashed due to a thread error. I lost 4 unsaved images. Damn...

Soft rebooted and tried to change the temp again. I noticed the error appeared as soon as I entered the unary minus, for the negative temperature! It was -7 C at the moment.

It might have unsettled some other apps running at the time. I received thread errors while trying to save a file.

I hard booted. Did a graceful close of ST3P. Tried again. Same error. Some error no matter whether I used the minus key in the numeric keypad (on the external keyboard) or the hyphen in the QWERTY area.

Got an idea. I'd switch to Fahrenheit degrees to bypass it. It seemed to be an issue with the negative value. It worked! And then switching back to Celsius showed the correct temp, with the negative. Cool. Er... cold!

Reported the error and details to Greg. He replied promptly.