After take off with X Cub float, I have CTD.
Be sure you start with an empty Community folder and then test. If you still get the CTD, then it might be a Zendesk issue. Where are you starting when you get the crash, and are you starting on land or water?
I start on Bora Bora airport (Nttb).
I just took off from cold and dark, retracted the gear, did a splash and go in the water, then landed, parked, and shut down. No issues. My XCub floater and airport are both stock, and I don’t have any other scenery within a thousand miles, so this was essentially a stock sim flight.