I find it hard that someone will update it without being a user of it already.
It can take a lot of effort depending how long it hasn't been updated.
Anyway I see that the layout uses oUF embedded. First thing, try updating that folded using a recent release of oUF. You will not find it here, you will need to download it from GitHub (or clone it if you know how to use Git). Use
this one or
this one.
With a bit of luck it will work... for the most part. You will still be missing on the new Powers added like Insanity for priests etc.