I don't have a Test1 rank in the paths file at all, I've reinstalled this completely and set it up and the error still persists:

thrall:
prerequisites:
in group:
value: thrall
requirements:
money: 10000
mobs killed: 200
time: 4h
results:
rank change: viking
command: broadcast &p has just completed path 'Viking'!
command2: give &p 1 100
message: Congratulations, you completed the 'Viking' path!
options:
display name: The path to Viking!

What is it doing? there are no error's in console either.

Stop the server and remove the test path (it is still in your Paths.yml). Then restart your server.

Have done, it's changed to the rank now, I'm studying the examples as I write this so hopefully should now work. It seems more effective to edit the file live and reloading

Reloading is not recommended as it can cause major bugs that Autorank does not like. Ideally, you turn off your server, then configure your Paths and restart to test. Perhaps using a test server so you don't have to constantly restart the production server.

Yeah I've just found that out haha, it's stable without including "options" seems to be the issue now, does I was setting this up as per example:

options:
    display name: "Becoming a Veteran"
    auto choose: true

but does it work like the rest of the config eg:

options:
    display name: 
            value: "Becoming a Veteran"
    auto choose: 
            value: true

?

The options don't have a value parameter, so the former is correct.

I'll work on it,

Thanks for your help :-)