For my modpack project I have, I uploaded the modpack ZIP for the release, but I messed up something in the file. I wanted to delete it, but it just won't let me. I tried checking off the box and selecting "Deleted" in the drop-down menu like someone suggested, I tried archiving it... nothing is working. And, I can't upload the new file, because it says it's a duplicate of the first one. I can't do anything until I delete the first file, and it won't let me delete it.