Generally speaking in my experience this type of error usually comes down to either a formatting issue or a resolution issue.
I'd likely say it's because the files it's trying to pull are buried too far down into the file system OR your O/S has some kind of protection against reading those files in that directory.
I'd just move the stadium directories directly into the models directory (it's where I have them ... I.e. models/yankee instead of models/silvam/yankee