First off I want to say a big thank you for creating such a great plug-in. It seems to do exactly what I want from it.
Now the bad news, sorry. I seem to have a problem with the thumbnail images. In the settings panel I have set "Crop images to size?" to "Crop to exact size, from center of image." but the images, though cropped around the centre, appear to be squashed sideways. Is there something I am missing?