Just trying to make my first map, first time trying and it says this when i select pictures to be my loadscreen, main menu screen and mission screen.

A little help on how to fix this would be nice, can't find anything about it anywhere.

 

Need to convert material through Asset Manager and have type set as 2D

Asset manager? (sorry if this seems like a newbie question, but im new to this)

Yes open luncher and on the left side there's something called asset manager.