I got your park download and opened it up in OpenRCT2. Surprisingly, it worked!
However, I was scoping around your park trying to find the best areas to add into a custom title sequence, and I noticed the park rating dropping quickly. I also found some guests on your underground path system wanting to go home. Ten minutes later there were like 200 lost guests and the park rating fell down to a looming 300.
I'm not complaining about the park, though. Everything was top-notch as far as I could see, until I screwed around with the object inspector thing and crashed the game