Seems like Chrome (for Mac) is blocking an unsafe script in the examples in https mode. eg. https://framer.com/examples/preview/#writer-slideshow.framer
Yep, seems like the https-certificate (or whatever it is) is expired.
Looks like we include non https resources. If you switch to http it's fine. I'll fix it. Thanks for reporting!
Oh, and while you're at it, can you add scrolling as a menu item? http://framerjs.com/learn/basics/scrolling/
We're working on updating the scrolling part. A few more days. It will be worth it :-)