Illustrator: Remove stray anchor points
Sometimes when working with lots of paths in Illustrator, and you’re copying them, using the scissors tool to cut them, and so on, there can be a tendency for stray anchor points to appear. These points are arbitrary points left on your artwork that have no stoke or fill associated with them so you can’t see them. One way to check to see if you have any stray points is to marquee over your design to see if there are any arb anchor points floating around. A better way to fix this is to let Illustrator find them for you. Go to Select > Object > Stray Points, and if you have any Illustrator will highlight them. Press the delete key to remove them.