This bug has been killing some savefiles for me and it took me some time to find out how it happened. This is how it works.
Create a variable with a numbered array. Just enter some numbers. After your last number, press enter and close it. This will result in an "enter" for the last entry of the numbered array.
Save the file and run it.
You'll get a ton of errors. If you closed the file and reload it in the developer, the developer gives a ton of errors and crashes. The savefile is lost.
I labelled this a critical bug since I have been unable to recover savefiles with this problem.
Having a numbered array with an empty last entry corrupts save file!
