I'm using iPhone 5s and have the latest versions of YACReader and iTunes installed. Trying to import a big PDF file about 421 MB big but it crashes the app when it gets to about 91% progress.

In iTunes I go in File Sharing > YACReader. I wait until it's finished copying, then I go to iPhone YACreader and hit import. Crashes every time when it's almost done.

I've tried deleting the app and starting over and making sure no other apps are loaded. I've also checked my free space on iPhone, it's 2 gigs free, so not enough space isn't the issue. Any ideas?

Please, send me the file so I can find what is going on.