Can't save track design with scenery

[JiWang]

I just got a new computer so I copy all my RCT2 files from the old one. Everything works fine until yesterday. Whenever I save a track design with even just 1 piece of scenery, the popup message say: "Can't save track design. Ride is too large, contains too many elements or scenery is too spread out" . The track alone without scenery can be saved. I tried reinstalling both Openrct2 and RCT2 but nothing worked. Then I discovered it only happens with my custom park I created. That park has a massive file size compare to others. I also tried create new park but it still have that massive size and scenery still can't be saved. Can anybody help me? Thank you in advance.

[jensj12]

Can you upload the affected save?