in my case there is no error message it just "hangs" I refresh (press F5) and lower the DPI on my pictures and the upload goes fine albeit it a lot slower than the older version. it
recently even pictures that are 1600 on the largest dimension have a problem sometimes. it seem to be ones where the dimension are almost 1600 x 1600. is a shame Auctiva didn't keep the old version available for folks with older browsers. The removal because of Chrome seems short sighted.