Have been messing around a bit and the results are...confusing...
First I found me a laptop with PS4.00, naturally it didn't connect to anything so I ran the 4.01 installer, after which PS totally failed to start. So I uninstalled everything, deleted what was left of the PS directory and ran the 4.01 installer, then the updater and suddenly I had textured terrain again

Then my 'real* computer. Like my laptop I uninstalled everything and deleted leftover files, then reinstalled fromthe 4.01 installer and ran the updater. Unfortunately, this comp did *not* behave like my laptop. Half a dozen tries yielded the same result: Clean install from 4.01 and the ground got textures. Run the updater(with many errors) and the ground gets black again...
