Weird, is this a fresh install of the game? I mean did you just installed the game and give you the error when trying to run the game? No mods added or files overwritten or changed? I can try to upload just that file scene28.rpym in a zip file from my installation and you overwrite over yours on that location that says on the error (saying it is defined twice) but probably can be simply a bad installation or a corrupted download if is a fresh installation.
Try to install fresh the game again or even download the game again from another uploader, but I have more questions. Like is it the first time playing the game or you played it before and ran fine?
It was easier for me if I understood totally what is written in that traceback, also if you have added more information on what conditions you got that error.