Material.SetFloat() Crash with EXC_RESOURCE - WAKEUPS

Hi,

My application is freezing for no reason...
I have a simple scene with one texture mapped on a sphere and a GUI.

The application crash at random time when I move the camera.
XCode doesn't show any error, but I have a EXC_RESOURCE exception in the device log

I'm using Unity 5.3.2f1, Xcode 7.2.1 and the device is on IOS 9.2.1

Can someone help me on this ? I don't know what to do anymore...

Thanks a lot

Here is the log:

Material.SetFloat() Crash with EXC_RESOURCE - WAKEUPS