Honeywell/Ademco Vista 20p. Eyez-On EnvisaLink-4
This morning we were made prisoners of our home. Keypad would yield only "User code error. Keys 0-9 locked" and, when I went to the page at EnvisaLink to see if "Recent Events" would yield any clue, I saw "Error: *29 Programming on panel not completed.. Tried the local web interface. Made the keypad *beep*, and that was all.
Waited 15 minutes for the keypad lock to clear. It did not.
Resorted to MS-Windows type repair: Went to the panel, pulled the battery and the transformer, waited a double-ten-count, plugged it all back in. Keypad was enabled and the *29 error had disappeared.
Any idea of what may have happened?
This is the first bobble of the system in the fifteen months it's been up, but it is disquieting, nonetheless

Thanks,
Jim