I have a tricky problem. In one of my app, with over 150.000 downloads... I have a problem which seldom occurs and which I can\'t seem to figure out.
The problem is
Not sure if you have fixed the problem, but I have met it recently in my project.
A workaround I did was to allocate and initiate MFMailComposeViewController in an earlier stage, and hold it in one static variable, whenever it's needed, get the static MFMailComposeViewController instance and present it.
It seems working for me, hope it will work for you, too.