I fixed 3 more issues not mentioned above, and now it works for me.
It seems UE5.2 reads heightmap file names differently than 5.1.
What you must do is be careful not to have a point (.) inside your name!
Also, my data folder adress of the image was greater than 256 signs;
so that was fixed by loading that image directly from download folder.
Finally, the heightmap was exported from “Cities:Skylines map generator” with
a HUGE offset in negative Z direction, so that i had to add like 70k in z to make it visible
above a reference plane at 0m height in world origin.
Another note:
YOU CAN USE RAW AND PNG FILES!
Both worked for me.
You should not use 8 bit but 16bit for smooth surface,
and try to maximise resolution for later terrain painting!
Best wishes and happy creating!
Cheers, Hannes
