Larry,

I took a quick look at your account, and I don't see any errors. It appears that you have plotted several polygons over top of one another. If you want to delete one of them, simply double click the middle of the shape. A popup window will come up with a link to delete the polygon. You will need to save your changes after removing polygons. Once you get back to a blank map you can start again. If you need additional help, feel free to email me directly at brian@djcase.com.