Well I am dumbfonded.
I tryed to upload a simple test image smaller than yours yesterday when the member reported the problem and it kept taking me back to upload page with out uploading the pic.
I am lost for words to why it now works for me as well as it did for you.
Sorry for be such a bother when I can not explain why it would not let me or the member upload a pic.
Just not my week I guess for things to go right.