cesarzevil , you go do something like this :
name all your layouts with numbers like : 1,2,3,4,5...
so events like this :
-pressed on level button
while its unlocked ---->action : system : go layout (by name)
and put this name :""currentlevel+1
this will fix the problem but you need to create the layout or it will not work and you will think it didn't fix ^^
anyway if you have any question please post in the same tutorial or pm as i mentioned on the tutorial so i can get a notification and help you ^^