Just checking to be sure… did you go through the sticky on the General tab?
http://forums.h-body.org/viewtopic.php?f=1&t=28612I just tried from my iPad, and as long as the image file size is small, it lets me upload pictures. It gives me the ‘invalid image’ message if the image is too large a file size. Also, sometimes microsoft windows reports a compressed image size - it’s the uncompressed size that has to be less than 256 kB.
When resizing, be sure you are uploading the resized picture when you shrink them, not the original one. In the past I’ve uploaded the original one a couple times before I realized the photo resizer I was using was renaming the resized file.
Example attached