When I try to add a new calendar it gives me a message "Error - Reinstall Calendar" If I do this will I lose all the calendars I've created so far?

Dear Kevin,

You will not lose your events and calendars if you reinstall Spider Calendar the following way.

Please deactivate and delete the current Spider Calendar installed to your website, and then install again.

Make sure not to uninstall the plugin, since this action will delete your events and calendars.
Thank you!