Since you mentioned a "Part..." file (likely a multi-part archive), make sure you: Have downloaded in the same folder.

To get the most out of Footage Crate's magic assets, make sure your project is ready:

Use or WinRAR to extract "Part 1"—it will automatically pull the data from the others to give you the full high-res MOV or MP4 files.

Use a "Curves" or "Hue/Saturation" effect to match the magic's glow to your scene’s lighting.

"Finally got my hands on the Footage Crate magic library. The layering on these particles is insane. Process: [Your Software, e.g., After Effects] + Linear Dodge blending + a little motion tracking."