Gene: I've viewed the links you sent to me, and both the Rachio and Google Drive services are enabled. Here's what the applet log shows:
Nothing happens when I click on "Show details."
I've also disabled and re-enabled the Google drive service. Strangely, my Android phone Google Doc applets started working for the first time. My Rachio controller hasn't run yet, so I'm not sure if that applet is going to work now, too.
Kpontis: Here's a screenshot of my applet's settings:
Modawg2k: I have several other IFTTT applets that work perfectly. So far, the only applets I've had trouble with are the ones that write data to Google Drive files.
Thanks to all for pitching in on this.