In detail: For all future steps, keep in mind that a Bethesda Softwork Archive file is merely an encrypted archive with an internal hash for each individual file. If you do not know how to register BSAs, please see this video, read this installation guide, or read through the Nexus page for Tamriel Data. In short: Your BSAs are almost certainly not registered, so Morrowind can’t find them. I'm getting crazy error messages about missing meshes and missing items.I coc to Firewatch and my game crashes after a ton of error messages!.I'm getting “actor has no animation class” errors!.