Why are Macarossi's waterfalls crashing my game?

Would someone please tell me why these 3 Macarossi waterfalls crash my game?

  WaterfallSmall_macarossi_PondCollection2007.zip (Size: 1.63 MB / Downloads: 6)

I've tried them one-at-a-time, and each one causes a crash - when I click it in the catalog.
Have you heard of this happening to anyone else?

Thanks!