Hello, my name is Eddie, I really love Thumbnail Gallery plugin, I created over 100 galleries for one of my client’s site. currently my client needs the thumbnail to be original proportions (ratio), which means have a fixed height and a “auto” width, don’t want to crop a fixed width and height. I did test by changing setting on wordpress dashboard – setting>media , on Media Setting, I turn off ” Crop thumbnail to exact dimensions ….”, and keep Thumbnail size, Medium size and Large size empty, and doing “Save Changes”. After that, images cannot be added in gallery. I try to use “Simple AJAX file upload”, but “gif” format files cannot be loaded in gallery also. Please help! Really appropriate it.