Okay this means the OSPi is the one throwing the error:
[Mon Jun 24 21:43:13 2013] [error] [client 192.168.1.113] PHP Warning: file_get_contents(http://192.168.1.131:8080/cv?pw=opendoor&en=0): failed to open stream: HTTP request failed! HTTP/1.1 500 Internal Server Errorrn in /var/www/sprinklers/main.php on line 372, referer: http://192.168.1.127/sprinklers/index.php
I read you updated but I am suspicious something went awry in your upgrade to the latest OSPi because the internal server error 500 means the OSPi is looking for something and not finding it. I can tell you precisely what is going on with your OSPi logs, but without them I would ask you to delete the current Python files and update to the latest, once again. If you open ospi.py what does the second line say? It should read:
"""Updated 22/06/2013."""Edit: I just tested the latest copy straight from Ray’s Github and can confirm it is working great. Let me know what the second line says and we can proceed from there.
Thanks!