Could the following code produce a crash on older devices?

Could the following code produce a crash on older devices?

pI have this bit of code relating to my in app purchases for an
codeSKProductRequest/code:/p precoderequest.delegate = self; [request
start]; [request release]; /code/pre pOne of my users is getting a crash
on an iPod4 and I think it might be from this, however, all other devices
are able to run this code OK. Should request be saved in a property while
its loading, could that be the issue? I would think with [request start],
that request would be retained somewhere else./p