When there are catcoon dens near frog spawners, or (this time) due to a frog rain, leading to inter-mob battles as I go past on-screen, the game crashes. I took a picture of the error screen this time but so far it has happened every time since (at least) the Quacken update. I'm not using any mods.
Steps to Reproduce
Required: catcoon den, at least one living catcoon, lots of frogs. I wasn't involved, I was just walking past when chaos commenced!
This issue has not been confirmed by a developer yet.