I might be missing something here. But I used to use Erminig. I had loaded gpe-calendar on my N810. One day I was looking at it and thought 'I wonder if I could just point it to my Google Calendar'

Here's what I did. First you'll need the public or private URL of your Google calendar. Make sure its the iCal one.

Next, in gpe-calendar click on

Click on Tools->Calendar

New. Title and all is self explanitory.

Then click on 'Type' and click on 'Subscribe'

This will then give you the URL, password, etc in there.

For me I just wanted a one way sync from Google to my N810 and this works perfectly. I see there is also an option to create a publish calendar as well. So I'd imagine that works too.

Maybe I'm missing something obvious that others need. And not to be dismissive of this project. But once I found these options in the gpe-calendar I haven't had a need for anything else external.