I had IE8 problem - cropper didn't appear but endOnCrop was called and
worked. I just did't see crop area. It could be partially solved by
IE7 back compatibility meta tag, but (I really don't know why)
lightobx stopped working in other browsers. My problem was in old
prototype library (1.6.0.* branch which is used in Ruby on Rails 2.x
by default). So make sure you have 1.6.1.0. Best thing you can do is
to check if demo runs in your browser before you start to search a bug
in script itself :)
http://www.defusion.org.uk/demos/060519/cropper.php?demoType=basic&image=castle&formSubmit=Load+demo