iOS 7.1 Exchange PDF viewing

So we found a workaround via https://discussions.apple.com/message/25159423?ac_cid=op123456#25159423

"Interestingly, I think I stumbled on a workaround.

For one of the emails with an attached PDF that I have been having trouble with, if I tap on the PDF icon to download it, and then tap on it to open it, I get the error (black or white screen).

But, with this same email, if I first tap on the "Download Full Message" link at the bottom of the email, the PDF will then open correctly when I tap on the PDF icon.

I confirmed that this works on two different iOS 7.1 devices."

I have had a general problem viewing pdf attachments with GMail app. and links to pdf files on many web-sites. The loading stops and a black and/or blank (white) screen appears.

My solution was to remove restrictions to Websites (general restrictions).

I had set my restrictions to "Limit Adult Content" which resulted in blocking of most pdfs attached to mail handled by the GMail app on iOS7, and most pdfs found on (all) websites.