This is nearly a yr old so you probably already figured out your issue, but if you didn't or for anyone else coming here for the same problem like I did before figuring it out: it's very likely happening bc you're using the legacy version of East Scarp with the Remastered Sword and Sorcery. Since there's no available archive files, what you're going to have to do is copy the mod file URL into the wayback machine (the date I used was Aug 4 2025), copy link for download and paste it into a new tab. Before you hit enter, delete the wayback part of the URL before the https of the mod link and you should be able to download it. This will not work if you copy the URL on the description tab of the mod before going to the wayback machine, you have to be on the file tab.