Hi,
I've the same issue: fine on simulator, crash on iphone (jailbreaked, 3G).
I tried to do the "ldid" thing... but all I can get is:
iPhone:/Applications root# ldid -S Colorimetre.app/Colorimetre
util/ldid.cpp(416): _assert(0:arch != NULL)

Is there a specific build option to tell in xCode?
Thanks in advance.