I used to have no problems uploading or updating on Kobo, but lately that's changed. Whenever I try to upload an epub to update a book, I get an error "Sorry, we couldn't upload your file". That's it, nothing useful about why, just a one line message. I've checked out their less than helpful help section and found nothing and I've likewise written them (still awaiting a response), but I figured I'd ask here and see if it's just me. Frustrating because while I don't sell a lot there, I like to make sure that everywhere I sell has the same version. I don't want someone on another book store getting typos or old formatting that have already long been fixed on Amazon.