Hi
Thanks for the reply.
As in my original post the reason I changed the name of the file was to get the wordpress app to work, then I installed a plugin that makes wordpress recognise the modified file. I found this solution in the wordpress app FAQ. But the issue was there before I made the change
I know the file isn't being blocked by my host because I have three sits on the VPS and they all work.
Also jetpack was the first plugin I tried to instal and set up before I even changed the theme so it can't be a compatibility issue.
The only other thing is that the site is in a sub folder, but so are the other two sites in the server and they also work perfectly.
Any help is greatly appreciated thanks.