We are using Defusion.org.uk's Image Cropper UI. It's working fine on all versions of IE/Firefox/Safari, with ONE exception... one machine that I tried it on tonight shows a white area where the transparent crop area should be displayed. Strangely enough, we've tried this on other machines running the same (most recent) version of IE 8 on Windows 7, no problem, every build, version number, setting the same that I can see. Obviously something somewhere is different, can't quite figure out what, and the concern is that, since this will be a public website, we'll run into others with the same problem, that's out of our control to change from the client side of things. Has anyone seen this before? And hopefully know of a fix? It seems like some sort of opacity setting, but I can't figure out what, since it's working on 99.9% of the machines we've tested on.