Is there a url where I can see the truncated page? If you view source you can see where it cuts off and it means the error is on the next line. I checked your live site and the page isn't truncated there. I'd have to see the problem to properly diagnose it.
You should be able to remove server validations without causing other issues, but if I could see the issue I could try to figure out why that didn't work in this case.