TypeError: Object #<Text> has no method 'getBoundingClientRect'
Clicking OK removed the message and allowed me to continue as normal, then I received the error message again a few moments later. I managed to find that the error would occur when moving the mouse cursor over particular adverts on the right hand side of the search results, I then realised that these adverts had an AVG related icon on the left of the title which when you hover over an AVG dialog would appear regarding the safety ratings. To fix the error I turned off the AVG safe search option in the 'Google Extensions' options.