Em 20 de janeiro de 2011 Allin escreveu:

(...)
I think I see what's happening here. If I'm right, the problem is
that the R folks have once again messed with the directory
structure under Program Files/R on Windows: this changed from
R 2.9 to R 2.11, and now it's changed again with 2.12. Also if I'm
right, the Phillips-Perron script should now work OK with current
R (in the gretl snapshot for Windows).

Dear Allin, at first I would like to thank you for your efforts trying to solve this problem.

Now I'm testing my script with the latest snapshot but nothing different happens. The problem persists.

Best regards,
Henrique