Oh, I should detail how I went about syncing. Start up Firefox. Go to the Reminderfox Options --> Sync --> Remote Servers (FTP/HTTP) and uncheck Automatically Sync... box. Then click OK. Shut down Firefox. Before starting up Firefox, rename your Reminderfox folder to something else. I renamed mine to "Reminderfox old". Start up Firefox. It will make a new Reminderfox folder for you (but your WebDAV info will still be intact) and you will see zero events. Then you want to get an account at
Fruux. Import the ICS file from your "Reminderfox old" folder to your calendar. Select "sync" at the top and click on the "+ Sync with a new device" button. Open the Reminderfox Options --> Sync --> Remote Calendars and follow the instructions to add Fruux to the list. When you are done, the next time you click on the fox, it will download all your reminders to your new profile. The reason why you have to do this is because Reminderfox won't send the old stuff to the calendar. It will only send stuff you made since you first connected. Importing your ICS file without making a new profile will leave you with all events duplicated. WHEN (I am hopeful) this issue is resolved, disable Fruux, go to the Options --> Sync --> Remote Servers (FTP/HTTP) and check the Automatically sync... box. You should then be back in business!