Reallusion_character_creator_4.00_resource_pack... Here

While the CC4 trial or base installer contains the software engine, the contains the actual "DNA" of the characters. Without it:

: A library of facial and body morphs that allow you to adjust features like eye shape, muscle definition, height, and limb proportions. Reallusion_Character_Creator_4.00_Resource_Pack...

: A set of "Motion Plus" files and static poses used to test character deformation and skin weighting before exporting to engines like Unreal or Unity. Why It Is Necessary While the CC4 trial or base installer contains

You cannot access the high-quality characters. Reallusion_Character_Creator_4.00_Resource_Pack...

Many features (like automatic outfit fitting) will lack the necessary templates to function.