The easiest way to calculate a light is to open the main menu (ESC), click on 'editing GUI', flip on over to 'Light' and click on 'Calculate'. You will also notice there is a slider, usually set at 0. This is your quality setting, and you can movie it between -2 and 3.
 
The easiest way to calculate a light is to open the main menu (ESC), click on 'editing GUI', flip on over to 'Light' and click on 'Calculate'. You will also notice there is a slider, usually set at 0. This is your quality setting, and you can movie it between -2 and 3.
   Exception encountered, of type "Error"