Sorry, Silversurfer, maybe I'm not authorized to upload this post. I've been downloading material from your amazing website for months but a month ago an uploader, Yoyoilit uploaded a couple of files, "Knowledge Encyclopedia Planet Earth!: Our Exciting World As You've Never Seen It Before (Knowledge Encyclopedias)" and "Our World in Pictures: An Encyclopedia of Everything", both published by DK, that look damaged (they're epub and when I try to open or convert them to other formats, they look damaged). I've tried contacting Yoyoilit directly to let him know that problem but it semms that I'm not allowed to send him a direct message to see if he. please, can re-upload these two files in EPUB, error-free, or in other formats like PDF or AZW3. Thanks and sorry for the inconvenience.