Naming mismatch. Fix: For Wood R4, the folder must be inside _rpg/ui/ AND the folder name must be 8 characters or less (e.g., mario123 not Super Mario World Theme ).
However, the default black-and-red menu was getting old. He wanted his handheld to feel like R4 Themes Download-
Look for community forums (like GBAtemp) for more reliable and updated theme packs. Naming mismatch