I just down loaded the trial version an did a small run of watermarking. The program performed well. It sounds like there are a couple things you can check.The first thing I would check is this...is the destination folder different from the source drive. doing this kind of stuff you always have to have 2 folders. The one the photos are in(source) and a different one where you are you are going to put them(destination). It sounds like you might be sending them to the same place and overwriting them each time. That could be why the watermark does not go away but instead you get more of the watermarks each time?