http://tinyurl.com/6pvyw9
I tried to copy and paste that into my web browser. Nothing is happening.
It's possible that there may be a problem with the link provided.
So, it's likely that the image IS broken.
Well, sometimes it works, and sometimes it doesn't. So I don't think it's a problem with ZU, but rather, where you uploaded the image to.
Try re-uploading it again to imageshack or photobucket.... and don't shrink it in tinyurl to see if that works. Maybe the place which is hosting the image is having high bandwidth and server problems?
Anyway, it doesn't appear to be a problem with ZU.