I had to do a complete reinstall. Used a backed up sd card and the same error kept appearing in the logs. Backed up all my configs and mods. Did a fresh install and all works fine. Could have been one of the modules that gave it an error, I do not know but the calendar works great now.
Thanks
carltonb

Very nice looking.
I have never used the navigation buttons. Can you please explain what each one links to.
Thank you