I tried to change the default icon of my applicatoin and now the form gives an error when I compile it, and I don't know to undo the action and go back to the original icon.
I don't know if this helps, but I changed the icon in the properties box: properties box
Try this. Right mouse button click on the text label part of the Property item (property name) which bring up a context menu with Reset as one of the options - click it and see what happens.
