Pettson & Findus Hönsdans och Kattcirkus

I wanted to install the German Version of the Game, but I think it's corrupt because the files are all weird and glitched and I can't install the Game. I am really happy to see that, this game is being archived, because it was one of the Games which made my childhood, but I wasn't able to finish it, so I now wanted to try to give it another go. Maybe it's a problem on my side, if so please inform me and thanks in advance.
Best Regards
Unground