beginner with landscape problems

[eoghank]

hi ue4 beginner here.

i’m created a beach scene and used the landscape tool and a large box to create shallow pools of water. when i built the lighting black areas appeared and the texture on the landscape seems to be broken up somehow? what am i doing wrong?

[anonymous_user_923c79df]

-do you get any warnings?
-how should the texture normally look like?
-could you post a screenshot of your material
-could you show those black spots from above?
-are any meshes near those black spots?