Ah okay, thank you for your help. May I suggest making that clear on the features page. You mention supported image types, maybe just split this into two lines with .psd taken off of the saving one.
I have just written a little application that takes an image, modifies it and then saves the modified image as a new file. I was only trying to support .psd files because I thought "why not?" seen as they were listed as a supported image format.