Hi Fast,
I've checked your site and seen that hopefully, you have sent page empty.php too.
So we can run the link
http://www.ncirossallpoint.co.uk/test/empty.phpto see that your server is working well.
All pages seem to be there as no error is displayed (#404 or else), but nothing displayed
So, I think the problem is with your data files (files begining with wt_).
First, check your cumulus\web folder on your Pc to see if temp files are there (ie. wt_data_inc.phptmp)
Then, look at them on your website, is the timestamp on file changing after Cumulus update?
See if there is something (data) into the files.
Often problem is with the path to send it to your website.
Regards,
Jacques