Thank you I will test this tomorrow but I can already tell you that I most likely can't solve it. It's a weird error message that doesn't make any sense . I googled it and it seems to be a Game Maker bug. That's why I learn to use Unity right now. The most frustrating and time consuming part of development was finding workarounds for Game Maker bugs and with every update of that program there were new bugs. Sadly noone tells you that you shouldn't make updates while working on a project . I stopped updating game maker weeks ago because with the new update nothing works anymore and it even crashes everytime you watch the intro.