Ask the Experts / RCT2 Freeze

I'm not sure if this has been answered before, but I'm experiencing an odd thing that I've never had before. I'm not getting error trappers or anything like that, but it's only when I try to test a particular coaster in my park, the game freezes and I have to completely reboot. I have a lot of different versions of the park but I can't tell how far back I may need to go. I have tried testing a different coaster in the park, and there were no problems with that. It's just a recurring issue with a specific ride. The freeze occurs after I click the flag from red to yellow.

Any input could be extremely useful. Thanks and sorry. I know I start a lot of these topics.

Has this ride been hacked?
If so, it's probably been damaged or glitched during the hacking process, and thus Levis or someone with hacking experience may be able to help.
If not, I can't help you. Ask Levis or Kumba or someone like that for further explanation.

does the game freeze/errors when you try to edit or remove the ride?

What trainer do you use, if any?

What trainer do you use, if any?

I was able to demolish the ride and rebuild it from memory and using land colors and such, but I am still encountering the error with different rides from time to time. The freeze seems to happen when I try to do something much more "questionable" than the initial problem. (ie, now it will do it when I try to change a track type to crooked house with a log train, for example) Originally, the problem occurred when I was trying to test an inverted roller coaster, which shouldn't have been a problem.

Essentially, I can work around this, but it would be nice to know why this sort of thing happens. I use 8cars 8.32 (the one that says "version" on the top bar) for most stuff except it can't edit rides for me, and for ride editing I use 8.21.