Same problem here...I have been having this problem with this site for about 3 weeks now. It did not start with me until I wrote them about a pricing issue as I wanted to be able to offer my work to certain charities with no price mark up (or profit) on my part. I was informed that I had to have a price mark up. I guess they did not want those purchasing to know what their actual costs were for each piece of artwork sold. I got a generic reply telling me to try single uploads as that is better. I prefered the multiple uploads until it started making me have to scroll past the pre-set default settings on each one. Today when I tried to upload using .jpg format it kept rejecting my ability to upload with an error message saying it had to be in .jpeg,jpg,or gif format. Again all of my images are in .jpg format as that is what my camera uses for default though I have taken in RAW but not for this site. I am concerned about the stability of this company and also the fact they don't seem to provide a phone number for technical support. Hopefully they will get it straightened out soon if they are even aware of the issues everyone is having. Just a note, I recently purchased a canvas print for one of my artworks (24 X36) from another company for $68 and it was shockingly professional and beautiful and I was very pleased. The same canvas print at my cost from this site would have been approximately $200, so now I am concerned that this site is over pricing. If you have purchased prints from this site 24 X 36 or larger, I would appreciate hearing how you liked them.