Tutorial crashes on iOS. Serialize issue?

Hi,
I have been following this tutorial to save my data and it crashes on iOS but works on Mac…
Any idea?

http://unity3d.com/learn/tutorials/modules/beginner/live-training-archive/persistence-data-saving-loading

if this is a JIT issue, how do you solve this?

FM.

This worked…
Environment.SetEnvironmentVariable(“MONO_REFLECTION_SERIALIZER”, “yes”);

Found here, at the bottom of the page.
https://github.com/antonholmquist/easy-serializer-unity#protip-ios-jit-exception-fix