iPhone Contacts listing crashs on iPhone

Okay,

Mobile SDK 1.5.1, Ti Dev 1.2.2, Mac OSX, building for iPhone 3GS 4.2.1.

Runs fine on sim, fine on android, crashes on iPhone.

Simple to recreate

var contactList = Ti.Contacts.getAllPeople();
 
(iterating.. using c as iterator, there is at least one contact with a phone number)
 
var contact = contactList[c];
 
var label;
for (label in contact.phone) {
 // do whatever             
}

That "for in" loop causes the iPhone to crash. It brings up a warning during compile and even if I do a protective if

if (contact.phone.hasOwnProperty(label)) { .... }

It doesn't help (it does remove the compile warning tho)

So seems to be some problem/bug here in Ti 1.5.1.......

Chris