Email recipients having problems receiving and opening attachments after iOS7 update. Help!

Question

I use my iPad for work, and often send emails with multiple PDF attachments via the GoodReader app.  Since updating to iOS7, people are having problems receiving and/or opening my attachments.  All available updates have been installed for both the iPad and GoodReader apps.
My emails either show up with NO attachments, or with a box marked with an "X".
I Googled and learned others are having the same issue, especially when sending single page PDFs.
The email address/account I am using is through the Microsoft Exchange.  I will say, however, when I try sending the attachments from my iCloud email account, I have no problems.  I also had no problems with iOS6.
Someone is probably going to tell me this is a Microsoft problem and not an Apple problem.  Regardless, I need a solution.  This is very frustrating.  I'm ready to go back to using my Windows-based laptop.  HELP!

Answer 1

Solution for me was changing the "Load Remote Images" setting, shutting down and restarting the phone.  The old messages with problems reloaded with all attachments accessible. 
Background: I began having this problem recently with PDF, jpeg,vcf files and apparently now, all attachments as well as email with html links are coming through with no attachment or as empty email.  This was a new problem for me. I have been backing up to the cloud, but not using a cloud email account.  I have multiple accounts on the phone, six of them actually and have been set up this way for over a year without problem.  Some are imap, some pop, none are through exchange.