LOVE this project - thanks so much for it!!!

I am running this on our school reception TV and it has been going fine for a month (staff and parents love it!!) but recently, a few times a day we now get the white screen of doom with the "Aww Snap" message.

The web server is running fine and network connectivity is not a problem as I can connect from another machine so it is something to do with the local (to the Pi) instance of Chromium that is running.

Anyone had this before - how can I fix this? Is it a cache issue and if so, where is the cache stored for this?

Cheers!