I'm having the exact same problem. I found out its after I place a doydoy that I had picked up and brought elsewhere. As soon as the other doydoy does its mating call it crashes. Also, the doydoy that I carried over myself never woke up. It was in sleep animation teh second I dropped it and it stayed that way the entire time. I was able to take the doy doy to another island, let it go, and run off before daytime and everything was fine until I came back to that island the next day and the native doydoy (the one already on the island) tried to do its mating call to the sleeping one (still sleeping a day and a half later) and boom, crashed.