Thanks for that, i compared the file to the original in the zip folder and i found they were different sizes for some reason. So i deleted the whole lot and unzipped them again, seems to work now and load up properly.
I have changed the DNS on the ATV to the plex connect as per instructions but it does not work, i get trailers not available and it seems the ATV cant go online at all- ie no movies info, no apps working unless the DNS is back to 'auto'.
Should i mark this as solved and start a new thread?