just installed 3.3.3 alongside 3.4.0 and checked the setup of the quickstarter in 3.3.3. Couldn't find a way to patch this for 3.4.0 and the fact that it does no longer appear in the Options-Memory for 3.4 indicates that it was, at least temporarily, disabled for some good reason. On the other hand and due to an immense code-cleanup, LO3.4 starts substantially faster than 3.3. Maybe the LO-devs will fix the quickstarter with the upcoming 3.4.1 towards the end of this month.
-p.