I am using C, and I understand that the startup code is reseting memory. Thanks for that Andy.

My communication stack is a token passing, and I will only respond when I have the token and there is a request to my device id. I do know that I keeping up with the amount of data coming in.

I did find what is happening. When I try to write text to a property in my device, (text only, numbers fields work fine), my device never leaves the interrupt routine that I am using to call my communications stack. I am using timer 0, with a 5msec delay. Because I am never returning to main(), my heart_beat counter is never resetting back to 0. When it counts up and rolls over it resets my device.

I guess the questiosn is why will my program not return for the interrutp, back to main()?