The daysum.txt and daily files continue to be corrupted at totally random times on p101 so I replaced the batteries in the console, did a total reset and then installed p103, we'll see if that changes anything.
Well, a day later, no joy, last night at 9:20pm the files were corrupted again and 2 lines were entered into the daysum.txt file, the following files were created in Summary: 2013.bin, 2013_21.bin, 2013_21_20.bin. So far today it's running perfect.