If it didnt come with images, then its just to see a preset not use it. For example some presets that you ARe able to use usually come with these
Preset_11.material
bodyL.png etc... whatever the person calls the images for the preset.
If its just a file called (name).fhp <-- if it has Fhp after it like that then it is just to seee a preset.
If it dosent have that, then u could be missing files, as well the fils do not go into presets folder. To USE any preset u put them into one of your My_preset folders and edit the material coding as needed for the folder name.