since I read
- Public icalendar file
in the changelog, I'm trying to get it work with Apple iCal. I successfully imported my calendar into a zimbra calendar and mozilla sunbird, but iCal is telling me that the file ins't valid.
There was an error subscribing to the calendar.
I only have the community version of GO, if I want to sync my calendar with various clients and mobile devices I need the professional version, or? Is there any combination package for the professional and billing (I already have) package.