This occurs when the specified turbulent wind file was not found by Ashes. A typical situation where this occurs is when someone shared a model with you: if their model uses a turbulent wind file but they did not share it with you, you will get this error message.

Ashes will then modify your model so that instead of using the turbulent wind file that was specified in the model, it will generate a new turbulent wind from parameters.

Warning: make sure to enter the correct parameters for your turbulent wind, otherwise you might get different results than what was obtained with the model