A Boy and His Kite Demo: how to get the full demo ?

Having the same issue. Just roaming about. I do notice a fair few errors in the log which relate to slow vertex maps and references to for instance a missing pine tree asset which is not even in the specified folder.

Spent a fair bit of time on this, re-downloading the 4.10 content etc, no luck. Anyone have a clue and/or tried a full re-download for 4.10 recently and got it working?