@John Liberatore Did you copy/paste the link from Google Calendar ? Was that the secret one ? That's the one that you have explicitly reveal, which is not shown by default. Once I did that, I had no issues sync'ing over the cloud to my two tablets. That was using the Linux version, as I stay away from Windows and MacOS. To get your "secret" link to your secret ical file, do the following: - Get to your Google calendar over the web - Click the gear icon on the top, of the page, select Settings - Under Settings for my calendars, click Integrate calendar - You will see an item titled "Secret address in iCal format" with only dots - Click on the eye at the very right end of the line to reveal it. - Copy/Paste this address to your CalSync app. You're in business. Be careful not to give this address to anyone. As I mentioned, I am using the Cloud version of it. But it should work regardlessly of the connection type you select.