This happens in gretl 1.5.1 and the latest snapshot (6.1.2006), (windows version): 1- First, I run a high precision regression: mpols y 0 x 2- I run: genr cfx = $coeff(x) to get the internal variable and command returns no comments (no errors or messages saying scalar cfx generated) 3- Consequently, running "print cfx" returns an error saying no variable named cfx. 4- Next, I run a regular ols this time: ols y 0 x 5- Running genr cfx = $coeff(x) creates the scalar OK this time and I can see the value using the "print cfx" command. 6- Now, I run the initial high precision regression once again: mpols y 0 x and suprisingly running genr cfx = $coeff(x) suddenly starts working by giving the message "replaced scalar cfx ..." 7- Finally, after running a mpols and running genr to get $uhat, $yhat, $stderr, $rho, $vcv also return no feedback (as described above) while $T, $rsq, $ess, $df, $ncoeff, $trsq, $sigma, $aic, $bic, $lnl return "The statistic you requested is not available. On the other hand $nobs, $pd, $nvars, $test, $pvalue seem to work OK with the genr command after running the mpols. -- Don't go around saying the world owes you a living. The world owes you nothing. It was here first. - Mark Twain --