I will clarify a little more on the issue I am having.

As soon as I launch ffxivboot.exe the black screen from the launcher opens up then the script error immediately pops up before loading any of the news etc. I didn't change anything when this randomly occured, but windows may have installed an update behind the scenes.

I tried a supposed fix for this type of problem where people would change B4EulaAgreement line from 0 to 1, but this is not working either.

If anyone knows a fix it would be greatly appreciated I'm thinking reinstalling windows 8 might by my only option as I have tried reinstalling the game