[Hustler1337]

You need to install "SIX" and "REQUESTS" addon libraries as well for this Dev branch to work correctly.

You can find them under here:
Settings | Addon-ons | Get Add-ons | Kodi Add-on Repository | Add-on Libraries

Thanks for your help vc4u, it fixed the 'script failed' when launching Kodi. However, now, during playback the 'script failed' notification shows up.

Anyone have any ideas?

I've entered my login credentials correctly on the script configuration and am playing .strm files from my library.

Thanks

I had the same, you properly have rating disabled.
See https://github.com/Razzeee/script.trakt/issues/7

As far as I know I have ratings enabled. Am I looking in the right place?