The yamlvim website is https://www.vim.org/scripts/script.php?script_id=3190. I'm not sure if it's a typo or the link has been changed, but it was the wrong link, anyway. ([3191](https://www.vim.org/scripts/script.php?script_id=3191) not [3190](https://www.vim.org/scripts/script.php?script_id=3190)) Thanks.