I have just updated to NextGEN Gallery 1.9.13 (WP 3.5.1) and now I cannot see the thumbnail images to crop. When I go to the image and select Edit Thumb the pop up opens to crop the image but there is no image in the left window. The link seems to be broken.
I need to do this as I was hoping that this upgrade would fix the slideshow cropping issue where it is not showing the images as per how I have cropped them. The slideshow seems to crop how it wishes.
Image 23 is a good example of the cropping issue.