I suppose I've left out any useful information about Roster Export.
The downloaded/Windows version is discontinued. It will not be updated.
There is a new test version of web based version up at staging.rosterexport.com. It's a bit rough at the moment, and has issues with timezones and google calendars that I'm aware of. When I get some spare time I hack away and try to get it working. Bear with me.
More info to come.
Steve