Unity to xCode to iOS device problem

Hi,

I am having some trouble with the Xcode project I created from a game I developed using Unity.

My client has the apple certificates, provision, keys, etc. And he exported them all through xcode's organizer.

I installed them on my computer and Xcode seems to be working with my devices, HOWEVER, when I build and run, xcode supposedly installs the project and runs it, but as soon as the Unity3d splash screen is over, the game quits. (It also happens when I launch the game from the device and not from xcode.)

Xcode shows no errors, the game just "finishes" the run with no explanation whatsoever.

I've been trying to find a way to fix this, but I've failed miserably. If anyone can point what I might be doing wrong, or a workaround or something! I would really appreciate it!

Thanks in advance!! hope you can help.

Frustrated dev.