Try to disable any Add-Ons that might have conflicted with the update. In the past my Safe-search addon would cause google to crash after an update. To quickly check if an Add-On is the cause, start Firefox in [[Safe Mode]] and navigate to the crashing site and see if it will work then. If that is is the case, disable your [[Uninstalling add-ons|Add-Ons]] one by one to see which is conflicting.