Thanks for reporting!
Unfortunately, the bug splat number is a SketchUp thing; AFAIK, plugin developers cannot access that mechanism to get diagnostics about their plugins.
Is the crash reproducible? By changing a light value, do you mean changing a value in the Rayscaper lights tab? Which version of Rayscaper are you currently running? If this would happen again, do you mind sending me the log file SUEX_Rayscaper.log?Rayscaper creates a log file in the application data directory named SUEX_Rayscaper.log. For example C:\Users\Thomas\AppData\Roaming\Rayscaper. To find the application directory, you can use explorer on Window, and type %AppData% in the address bar. Make sure to send us this log file.
I received a similar report from Rich that he ran into a crash while changing light values, so I'm keeping an eye on this.
Thanks,
Thomas