It was not thru script or prompt (console). I have used the windows interface to run the unit root test (ADF test) with the variable X. Then a window prompts and you can choose to run the test with constant and trend, where the default is with constante. When I try to click the button to choose constant and trend, it crashes. I hope you understand what is happening. Anyway, thanks for the answer, Allin. Best regards, Bruno -----Mensagem original----- De: gretl-users-bounces(a)lists.wfu.edu [mailto:gretl-users-bounces@lists.wfu.edu] Em nome de Allin Cottrell Enviada em: quinta-feira, 25 de novembro de 2010 16:44 Para: Gretl list Assunto: Re: [Gretl-users] Gretl crash On Thu, 25 Nov 2010, Bruno Thiago Tomio wrote: Can you tell us precisely what tests you are doing? I tried the following and could not provoke a problem (or find any evidence of memory corruption using valgrind): open Pasta1.xls setobs Object Year --panel-vars adf 0 X --ct adf 0 Xgrowth --ct adf 3 X --ct adf 3 Xgrowth --ct Allin Cottrell _______________________________________________ Gretl-users mailing list Gretl-users(a)lists.wfu.edu http://lists.wfu.edu/mailman/listinfo/gretl-users