Hello, I have problems with garchFit. When trying to fit a time series, I got the following error :> garchFit(~garch(1,1),data=x,trace=F)Error in solve.default(fit$hessian) : Lapack routine dgesv: system is exactly singular The method works fine on series generating by garchSim. What could be the problem with the time series I use ? Thanks, Sylvain ************************************************************************* This message and any attachments (the "message") are con...{{dropped:13}}