Hey everybody I'm running Ubuntu 13.04, and everything works fine, except when I'm trying to implement the gnome-shell-google-calendar according to this guide.

It works, except that my online-accounts are not recognized (although set up).

Please choose the Account: None

You have entered an invalid account number. Please enter an integer.

Logging in as 'None'...

Error logging in as 'None'

'None' may not be a GNOME online account. A list of existing accounts is below.

If you do not see a list of accounts, then you first need to add one.

For more information, see http://library.gnome.org/users/gnome-help/stable/accounts.html

Please choose the Account:

what's the reason for that?