Dear All, While tuning some time series model with gsarima (which is primarily a wrapper for arima) from the astsa package, I encounter the following error message Error in stats::arima(xdata, order = c(p, d, q), seasonal = list(order = c(P, : non-stationary seasonal AR part from CSS According to what I found here http://bit.ly/1QmTJtu for a case with the arima function, the solution is to add method="ML" to the call to arima, but it is not clear at all to me how to introduce it in the sarima function. Any help is appreciated Regards Lorenzo