Hi, I got a weird bug here when installing the latest version of Gigs Calendar on the latest version of WordPress.
When I did this in settings:
"Select a page to house your calendar:"
"Select a page to house your gigs archive:"
Every page on my wordpress page got a 404-message. So had to deactivate this addon in the end. Reinstalling either didn't work.
I'm using the Constructor theme, if that might cause it - but i tried to change theme too, whitout success.