HELP!!!

Ok, When I try to load my park im creating it is saying it cannot open file because of invalid data, but before i got this error, my park opened up fine, no errors.

Dunno what the problem is, but I think I can help: Try to back up your parks and reinstall RCT2. That's what I usually do if my RCT2 decides to be a crack monkey and slacks off. Hope that helps!

it did not work, i did what you said and it still says the same thing. I just dont understand, it was opening fine and then it decided to say invalid object data. My other parks open up fine. Its just this one.