No idea. I used a 72x72 PNG. Maybe it's malformed somehow. Open it with something like XnView and save it, see if that works?
Also, I found a bug in the Maxthon browser. Apparently it's unable to save images. Causes an FC every time. However I can "View" the image in QuickPic, and "Move" the image out of the cache and into my download directory.
Samsung Galaxy S3 / US Cellular / d2usc