The file is in the same format as I received it; I made no changes to the files other than adding the ULC content to enable ULC to work.
If it is not spawning in-game, you may have to remove the ULC config, as that will prevent it from spawning if you do not have ULC set up properly or at all.
If you change the name, make sure you change the name in all of the appropriate files.
As far as it not opening in Open IV, I am not sure why it won't open. I would try and redownload it again and see if that helps.
Like I said, I took the file right from the download from Space and put it in the download folder and made a ULC config for it,; nothing else was changed or altered.