I am having a bit of trouble with some materials in the PERP 5.3 Serous roleplay server. I have downloaded the PERP mega pack, the map, and content from this website, extracted them to the correct locations, but for some reason, I just cannot get the Gardening Plant to stop showing up as ERROR. I have tried a few other PERP content packs I've found elsewhere, which didn't help. What am I missing? Is there a game I have to have? I have TF2 installed and have launched it already. If I remember correctly I thought the model was from TF2 but I guess not. If anyone could help me out that would be great!