If you're encountering problems, you can hold down the option-key while launching BusyCal to perform a safe boot. The BusyCal Startup Options dialog will be displayed offering a number of options that may be helpful when trouble-shooting problems.

- Reset Sync History — Select this option if you are experiencing syncing errors with Sync Services (iCal, iCloud, iPhone, etc.). Resetting Sync History will fix most syncing problems, and you will not lose any data.
- Reset BusyCal — Resetting BusyCal will clear your publish and subscribe settings, delete your BusyCal database, set iCal as the default calendar application, and quit. Your iCloud calendars will be preserved on iCloud, your Google Calendars will be preserved on Google, and your local calendars will be preserved in Sync Services.
- Convert to BusySync — Select this option to convert your BusyCal database to BusySync format. After the conversion is complete BusyCal will quit and you may then start BusySync.
- Send Logs to BusyMac — Select this option to send an email to BusyMac technical support with your logs attached.
- Start in Offline Mode — Starting in Offline Mode will stop BusyCal from syncing with any other apps or services including Sync Services, other BusyCal users on your LAN, and with Google Calendar. You may go back online by selecting Go Online from the Calendar menu.
- Start Normally — Starts BusyCal normally.