why does the material turn to black when I copy or migrate in my project?

[PhilippeC31T]

I have downloaded :https://www.unrealengine.com/fr/electric-dreams-environment when I open with UE 5.4 the Material instance MI_Amaryllis_01 in ElectricDreamsEnv.uproject the material is OK.

When migrate this material or if I copy the megascan directory into my project : the material turn to black ! .

Material instance when I open it or in electric-dreams-environment (left) or in my project (right) :

I have found a difference in the parent (M_MS_CustomFoliageNoOpacity) of the material : when I open it in electric-dreams-environment (left) or in my project (right) :

How to solve the issue ?

[laggyluk]

If I recall correctly, electric dreams demo is using substrate materials which are incompatible with regular ones so you either should enable substrate in your project or recreate it by hand (or copy pasting nodes between opened projects?)

[PhilippeC31T]

It works. Thanks a lot.

[laggyluk]

mind that this is experimental feature and practically all assets on the marketplace use the ‘old’ materials

[PhilippeC31T]

Finally i have switched off the experimental feature because all the materials are automatically updated : i prefer to avoid potential problems.