[dishnet34]

Here's what I always do to import silvam's parks into my game, step by step. He usually puts them in .RAR files, so I'm gonna go from when I initially download that RAR file. (For the record, I use Windows 10 and 7Zip, a free program, to unzip .RAR files, so I'm not sure how it works with a program like WinRAR)

Based on your experience, I would delete all of the folder(s) you already have for this specific park that are already in your models folder and redownloading the RAR file before starting this. For this exercise, I'm using the park you're currently having trouble with.

1. Open the .RAR file you've just downloaded in 7Zip. Upon initially opening the file, you will see one folder for the park. This is the folder you import into the game.
2. Drag the folder from 7Zip into your ballpark models folder. You will have one single folder in there for the park. When you open this folder from the models folder, it should like like the attached picture.
3. Go into your OOTP save and find the stadium you want to edit to have become that stadium.
4. Go to the 3D model section, and click Load 3D model. Navigate to the park you want to put in, select the .obj file, and it should show up.

I got the model to show up correctly using this method. Hopefully this helps.