It took me by surprise when I saved my project and the entire IDE went blank. I had to open GM and comment out the newest added code, to load my project in GMEdit again, without it just going fully blank, the whole application. Upon loading it again, I saw that I forgot a ']' when accessing an array. If I remove it again and save, the application goes blank again. Just thought I'd mention it, in case this is an unknown bug. In the gif below, I remove the ']' again and press CTRL+S