Migrating Project from 4.14 to 4.17 looses materials

Development Rendering
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1

HI everyone out there,

I have spend a lot of my time working on a big scene with alot of different assets with the 4.14 version of the engine.
Now I want to add some stuff with the DataSmith plugin, so I need to upgrade my project to 4.17.
When I do so, nearly all my meshes loos their materials and in the level a lot of the meshes aren’t visible anymore…
It seems that every actor is listed in the Worldoutliner but they are not visible on screen.

I have tested various ways to convert my scene. I tried to open a copy, migrate a selection of assets one by one and so on.
Is there something I forgot to do? I had some similar problems a while ago but didn’t manage to solve them either.

Can it be that the folder hirachy is to deep where the project is located?

I hope there is a better way to solve this than adding the materials manually… :confused:

Greetings
Evil_Fischi

2

try to update to 4.15 first
and then go up to 4.17

Also make sure you fix the riderections

3

Oh ok, I will gie it a try. But why would i need to upgrade it to 4.15 first? Is there a difference?

4

Just an advice - When I upgraded from 4.14 I upgraded to 4.15 first and it worked fine.

5

thanks ColdSteel48, it worked. I don’t know why this helped, is there maybe someone from the staff that could explain what did not worked?

6

Hey Evil_Fischi Glad It was helpful…

Well from 4.14 to 4.15 there was a huge delta in shaders - and then a little more in consequent versions…

So I assumed that… 4.15 was the only one that knew how to handle it :stuck_out_tongue: