I tried to post an image in the monthly challenge and it keeps telling me the image is too large. What I am doing is taking an image from Lightroom, exporting it to my hard drive in jpeg format and then trying to upload that image. I have tried numerous settings in the Lightroom export to reduce the size of the image and I still get the error message. My latest try was with a file 3.5 megabytes in size and I still got the error message. Any thoughts on what I might be doing wrong??