[Solved] GM won't open my project file

So I just tried opening my project, but I get an error saying it failed to load an 'object.yy'
Thing is, i deleted that object from within GM's IDE yesterday, and I did save my project before exiting the application.
I also just tried to copy and paste another object from another folder and renaming it to object.yy, but then GM says it can't link it.
Anyone know a fix to this?