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$ftp->cwd($i2) or die "change directory $i2: ".$ftp->message." / ".$ft
+p->code;
my @nfiles = $ftp->dir;
...
} else {
$ftp->mkdir($i3) or die "make directory ".$ftp->code;
}

push @errs,"cannot change directory from $ftp->pwd to i2: $ftp->messag
+e" unless $ftp->cwd($i2);
my @nfiles = $ftp->dir;
...

$ftp->quit;
if(@errs){ print join "<br />",@errs; }