1rst: Can I wrote all in spanish? Maybe it will be more comprensible.
2nd:The directory /var/www/imscp/gui/public/tools not exist (I said in the first post)
3rd: perl imscp-autoinstaller -dc not exist, is without er.
4th: I use this tutorial: http://wiki.i-mscp.net/doku.php?id=start:upgrade:debian, but with -c it works, thanks.
And finally, thanks to all for the dislike.
And thanks for the help (really).