If LL is anything like CF when it was released, you will not be able to open any of the parks created with a trainer, until another patch is created. When CF was released, Chris Sawyer knew about the trainers, therefore added a code that would disable parks that had a great deal of land that had been moved, or a budget over a certain amount.
Hang in there for about 1-2 months after LL is released, and I'm sure that Techno or Danimation will release something.
Something of note, I read on an interview with Chris Sawyer that there will be a "sandbox" scenario, where supposedly, there will be no budget to worry about. He wouldn't tell any specifics though.
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Neil
Pittsburgh, PA
www.geocities.com/neildeweese