Create a new form.
Put a grid on this.
Put a command button too.
Write a lot of code in the click event of the button.
Set the partition property of the grid in 500 (really I wanted to put 50).
Save it
Close it and execute.
Bingo! you have lost all. When you try to open the form again the message is "error loading the file, the partition property is invalid".
Somebody knows how to recover the form? I try to edit the .sct file but don't work.

Thanks..

Pedro