Haven’t used GS for a few weeks and now, trying to revise existing auctions I’m getting “Failed: Unknown image upload error.” This occurs whether I have “Revise Entire Listing” or “Revise only selected properties” selected. I have not changed the images. I’m using eBay’s image hositing. The listings appear correctly on eBay, but I cannot revise them. Trying only to revise price and shipping, not images. Any helpful suggestions welcome.