Avada › Forums › Community Forum › Fusion builder not working after update › Reply To: Fusion builder not working after update
Going by what you are describing it is likely that your theme has not been updated for some time. Check what version of the theme you are running, the latest version right now is Avada 5.6.2
This error -> Uncaught TypeError: Cannot read property ‘addClass’ of undefined” – would relate to WordPress that was updated to the latest version but the theme has not been updated. If you need to update be sure to follow these update instructions:
Updating from an old version of Avada? -> http://bit.ly/2pPNngZ
Important Update Info -> http://bit.ly/1FAmQpu
How to Update -> http://bit.ly/1H8JGzo
Fusion Patcher -> http://bit.ly/1QSd8Ol
Avada Change log -> http://bit.ly/1EK5mAg
Something else that is important is to also ensure any patches that our team releases between update cycles are applied as part of ongoing maintenance for your install and always clear your cache plugins post update
Patches are applied at the click of a button as explained in this help file -> http://bit.ly/1NAWVwM
Thank you kindly