I have a similiar problem, after I installed LL I couldn't load any parks I made using the CF trainer, even if I had it running, I had the techno trainer. I even got a LL trainer but I still can't open those parks, I just get a message that says the saved game contains invalid data. I had a really cool version of Dorney Park that I created with CF and I wanted to update it for LL, but I cant open it. Any ideas how I could open those parks? Did anybody else have this problem?