Locative location access on the iPhone is set to "Always" and locative does trigger and send the information. The problem is definitely on the ISY and is verified by the behavior when re-saving the program. For programs that are running fine with no changes, if I choose "Save" I get a message that there is "Nothing to Save". On this program when it stops working and I choose "Save" I get the message "1 Program Deleted" and it re-saves the program. So it appears that something is changing within the program in the ISY memory buffer which makes it non-functional until it is manually re-saved.