Hi, ufna.
Thank you for your VaOcean project. I am helped by it.
I installed archive_UE4.12 by your wiki instruction.
However, in VaOcean plugin folder at contents browser, all uasset files don't appear.
I opened each uassets file by text editor.
Then, text include "UE4+Release-4.13".
So I tried UE4.13, then they appeared and it seems everything is OK.
It might be better to describe that supporting UE4.13, not UE4.12.
When you try, you have to pay attention to this problem.
https://forums.unrealengine.com/unreal-engine/announcements-and-releases/115710-potential-issue-loading-ue4-with-the-new-windows-10-creators-update-build-1703
On UE4.13 and after Windows 10 Creators update (build 1703), you have to add -d3d12 to UE4Editor exe command.