diff --git a/03-boottoolsSoftwareInstall.py b/03-boottoolsSoftwareInstall.py
index 8ac6c65..d7f06a1 100755
--- a/03-boottoolsSoftwareInstall.py
+++ b/03-boottoolsSoftwareInstall.py
@@ -2,6 +2,7 @@
 
 import argparse
 import os
+import sys
 import re
 import subprocess
 import configparser
@@ -9,6 +10,9 @@ import configparser
 from boottoolsfunctions import _run
 
 config = configparser.ConfigParser (inline_comment_prefixes='#')
+if not os.path.exists ('boottoolsgenerator.cfg'):                         ## si pongo uno que no existe,
+    print ('configuration file "boottoolsgenerator.cfg" not found')       ## este error no llega al caller...
+    sys.exit (1)
 config.read ('boottoolsgenerator.cfg')
 
 debconf_settings = """
diff --git a/boottoolsfunctions/__init__.py b/boottoolsfunctions/__init__.py
index a9b54cd..9649fe2 100644
--- a/boottoolsfunctions/__init__.py
+++ b/boottoolsfunctions/__init__.py
@@ -12,8 +12,14 @@ logger = logging.getLogger ('boottools')
 def _run (args):
     cp = subprocess.run (args, text=True, capture_output=True)
     if cp.returncode:
-        logger.error ('stdout "{}" stderr "{}"'.format (cp.stdout, cp.stderr))
         logger.error ('command "{}" failed with rc "{}"'.format (' '.join(args), cp.returncode))
+
+        logger.error ('stdout follows:')
+        for i in cp.stdout.strip().split('\n'): logger.error ('  ' + i)
+
+        logger.error ('stderr follows:')
+        for i in cp.stderr.strip().split('\n'): logger.error ('  ' + i)
+
         raise Exception ('command "{}" failed with rc "{}"'.format (' '.join(args), cp.returncode))
     stdout = cp.stdout.strip()
     stderr = cp.stderr.strip()
diff --git a/boottoolsgenerator.cfg b/boottoolsgenerator.cfg
index 46e28ce..f05027c 100644
--- a/boottoolsgenerator.cfg
+++ b/boottoolsgenerator.cfg
@@ -1,23 +1,27 @@
 [Packages]
 
 basic =
-  dialog man-db fbset gdebi-core bash-static busybox-static locales lshw gawk git python-openssl python php-cli dmidecode rpm sqlite3 os-prober moreutils jq
+  dialog man-db fbset gdebi-core bash-static busybox-static locales lshw gawk git python3-openssl python3 php-cli dmidecode rpm sqlite3 os-prober moreutils jq
   #console-data  # ogLive anterior a Ubuntu 20.04
   #subversion    # ogLive anterior a Ubuntu 18.04
   #php5-cli      # ogLive anterior a Ubuntu 16.04
   #realpath      # ogLive hasta Ubuntu 16.04
   #zypper        # PROBAR
 
-cloning = fsarchiver pv pxe-kexec mbuffer parted gdisk chntpw clonezilla registry-tools reglookup libparse-win32registry-perl libwin-hivex-perl grokevt libhivex0 libhivex-bin rsync
+cloning = fsarchiver pv
+  #pxe-kexec     # ubuntu noble: Unable to locate package
+  mbuffer parted gdisk chntpw clonezilla registry-tools reglookup libparse-win32registry-perl libwin-hivex-perl grokevt libhivex0 libhivex-bin rsync
 
 compile =
   build-essential libattr1 libattr1-dev uuid-dev attr make m4 gettext libmhash-dev
-  #libattr*        # Satura el tamaño del archivo en Ubuntu 15.04
+  #libattr*      # Satura el tamaño del archivo en Ubuntu 15.04
 
 compressor = lzma zip unzip gzip lzop pigz pbzip2 lbzip2 rzip p7zip-full
 
 filesystem_local =
-  squashfs-tools unionfs-fuse ntfs-3g dosfstools fatresize exfat-utils dmraid dmsetup lvm2 e2fsprogs
+  squashfs-tools unionfs-fuse ntfs-3g dosfstools fatresize
+  #exfat-utils              # ubuntu noble: has no installation candidate
+  dmraid dmsetup lvm2 e2fsprogs
   jfsutils reiserfsprogs reiser4progs xfsprogs mhddfs hfsplus hfsprogs hfsutils nilfs-tools vmfs-tools
   btrfs-progs               # ogLive a partir de Ubuntu 20.04
   zfsutils-linux            # ogLive a partir de Ubuntu 16.04
@@ -34,11 +38,13 @@ filesystem_local =
 filesystem_remote =
   sshfs cifs-utils smbclient open-iscsi openssh-server
   #nfs-common    # Provoca error de instalación en Ubuntu 15.04
-  #bittornado     # ogLive anterior a Ubuntu 20.04
+  #bittornado    # ogLive anterior a Ubuntu 20.04
 
 monitoring = htop ncdu bwbar bmon iftop ifstat dstat hdparm sdparm blktool testdisk
 
-networking = netpipes curl wget tftp dnsutils trickle lighttpd ethtool ssmping tcpdump nmap arping ntpdate ctorrent udpcast #iptraf
+networking = netpipes curl wget tftp-hpa dnsutils
+  #trickle       # ubuntu noble: has no installation candidate
+  lighttpd ethtool ssmping tcpdump nmap arping ntpdate ctorrent udpcast #iptraf
 
 testing =
   screen schroot xmlstarlet
diff --git a/boottoolsgenerator.py b/boottoolsgenerator.py
index 897e488..576cc9c 100755
--- a/boottoolsgenerator.py
+++ b/boottoolsgenerator.py
@@ -12,7 +12,15 @@ curdir = os.path.dirname (__file__)
 sys.path.insert (0, curdir)
 from boottoolsfunctions import _run, _is_mounted, btogGetOsInfo1, btogGetOsInfo2, btogGetVar, btogSetFsVirtual, btogSetFsAccess, btogSetFsBase
 
-logging.basicConfig (filename='/tmp/boot-tools_installation.log', filemode='a', format='%(levelname)s %(asctime)s (%(funcName)s) %(message)s', level=logging.INFO)
+#logging.root.handlers = []
+logging.basicConfig (
+    format='%(levelname)s %(asctime)s (%(funcName)s) %(message)s',
+    level=logging.INFO,
+    handlers = [
+        logging.FileHandler ('/tmp/boot-tools_installation.log'),
+        logging.StreamHandler (sys.stdout),
+    ],
+)
 logger = logging.getLogger ('boottools')
 
 #config = configparser.ConfigParser()
@@ -33,9 +41,9 @@ type_client    = sys.argv[1] if len(sys.argv)>1 else 'host'
 
 if os.getuid():
     logger.error ('ERROR: this program must run under root privileges!!')
-    os._exit (1)
+    sys.exit (1)
 
-os.chdir ('/tmp')
+#os.chdir ('/tmp')
 
 #for i in `mount | grep IMGogclient | grep /var | cut -f3 -d" "`; do echo $i; umount $i; done
 #for i in `mount | grep IMGogclient | grep /var | cut -f3 -d" "`; do echo $i; umount $i; done
@@ -63,7 +71,7 @@ elif acse_gpxe:
     pxepkg = 'gpxe'
 else:
     logger.error ('neither gpxe nor ipxe found in apt-cache')
-    os._exit (1)
+    sys.exit (1)
 logger.info ('PXE package is "{}"'.format (pxepkg))
 ## TODO qemu no existe, hace falta?
 _run (['apt-get', '-y', 'install', 'jq', 'syslinux', 'syslinux-efi', 'syslinux-utils', 'debootstrap', 'subversion', 'schroot', 'squashfs-tools', 'syslinux', 'genisoimage', 'qemu-utils', 'lsof', pxepkg])  #>>/tmp/fase2.out
@@ -78,7 +86,7 @@ if (rc):   ## 'file|grep' failed
     try: btogSetFsVirtual (btrootfsimg, btrootfsimglabel, btrootfsmnt, btvirtualdisksize, bttargetdir, osarch)
     except Exception as e:
         logger.error (str (e))
-        os._exit (2)
+        sys.exit (2)
     #echo ================= nati after btogSetFsVirtual; ls -la /opt/opengnsys/tftpboot/ogclient/
 
 logger.info ('Fase 3.2 - Configurar acceso schroot al Segundo Sistema de archivos (img)')
@@ -97,11 +105,11 @@ if (cp.returncode):
     try: _run (['mount', btrootfsimg, btrootfsmnt, '-o', 'loop,offset=32256'])
     except:
         logger.error ('mount failed')
-        os._exit (3)
+        sys.exit (3)
     try: btogSetFsBase (btrootfsimg, btrootfsmnt, osarch, oscodename, oshttp)   #>>/tmp/fase3.out
     except Exception as e:
         logger.error (str (e))
-        os._exit (3)
+        sys.exit (3)
 #echo ================= nati after fase 3; ls -la /opt/opengnsys/tftpboot/ogclient/
 
 ###########################################################################
@@ -129,7 +137,7 @@ if (not _is_mounted (btrootfsmnt)):
     try: _run (['mount', btrootfsimg, btrootfsmnt, '-o', 'loop,offset=32256'])
     except:
         logger.error ('mount failed')
-        os._exit (3)
+        sys.exit (3)
 
 logger.debug ('running \'{}/02-boottoolsFsOpengnsys.py --mntpt "{}" --osdistrib "{}" --oscodename "{}" --osrelease "{}" --osarch "{}" --oshttp "{}"\''.format (curdir, btrootfsmnt, osdistrib, oscodename, osrelease, osarch, oshttp))
 stdout, _ = _run (['{}/02-boottoolsFsOpengnsys.py'.format (curdir), '--mntpt', btrootfsmnt, '--osdistrib', osdistrib, '--oscodename', oscodename, '--osrelease', osrelease, '--osarch', osarch, '--oshttp', oshttp])