Thanks! I did this, and at first Topofusion wouldn't work anymore. I would get an error message to delete one of the files I had already deleted. I then searched my computer and found these files at two other locations on my computer. I deleted both of them, and then Topofusion worked fine again. I'm not sure why these Topofusion files were at more than one location on my computer, as I believe I have only ever installed it at one location (the default). Anyway, thanks! Joe