Missing Elements on Test Play and matinee

Dear All,

I’m sorry if this is a simple question as I am just starting to make my first experiments with UE 4. I have been basically using the engine to render videos of my personal creations so far building my own levels in the editor and exporting matinee image sequences. Today i wanted to have a play with the amazing Snow level which had been made available kindly by Koola and wanted to drop a few objects in and make a video. However when i play the level or attempt to record a video much the lighting textures and falling snow is not visible. Is this to stop it being plagiarised as it just meant as a level to be explored or am i doing something wrong ? Any help would be greatly appreciated im sure ill have many more questions as my time in UE4 continues.