When I upload my program to the Peggy 2 it runs with no errors.
If I turn it off (un plug the transformer and switch set to OFF) for 24 hours the program restarts and runs.
If I turn it off for 4, or 5 days, it seems to loose the program altogether.
What have I missed?
Thanks

I haven't seen anything like this. Are you running one of the example programs?

I am running a program of my own creation, originating from one of the example programs, I made a few alterations to change its purpose to mine. This method of "cloning" establishes the correct format for the key functions, start() and loop(). After verifying that the demo program worked, I then began the process of making the changes. The only verbs used are SetPoint(), ClearPoint(), RefreshAll(), and delay(). I am wondering if the section on the 'help' files, titled 'Arduino - Bootloader' and "Why doesn't my sketch start" is the issue with my board.

How are you reprogramming it? If you're able to use use the FTDI cable, that would indicate that the chip is *not* losing its program, because there's a program that stays onboard (the "bootloader" that allows the FTDI cable to reprogram it. If some part of the flash is still working, I'm not sure how another part could fail.