diff --git a/main_tools/ConfPass.sh b/main_tools/ConfPass.sh
index 679b348..3d79e20 100755
--- a/main_tools/ConfPass.sh
+++ b/main_tools/ConfPass.sh
@@ -36,7 +36,7 @@ if [ -e $CONFPASS_CONFIG_FILE ]
 then
 	. $CONFPASS_CONFIG_FILE
 else
-	echo "ERROR : Can't find configuration file $CONFPASS_CONFIG_FILE" > /dev/stderr
+	echo "ERROR : Can't find configuration file $CONFPASS_CONFIG_FILE" >&2
 	exit 1
 fi
 
@@ -69,7 +69,7 @@ do
             RERUN=1
             ;;
 		:)
-			echo "Option -$OPTARG requires an argument." > /dev/stderr
+			echo "Option -$OPTARG requires an argument." >&2
 			exit 1
 			;;
 		\?)
diff --git a/main_tools/ExploitConfidencePass.sh b/main_tools/ExploitConfidencePass.sh
index c01c8e9..a6d71cf 100755
--- a/main_tools/ExploitConfidencePass.sh
+++ b/main_tools/ExploitConfidencePass.sh
@@ -77,7 +77,7 @@ do
             RERUN=1
             ;;
 		:)
-			echo "Option -$OPTARG requires an argument." > /dev/stderr
+			echo "Option -$OPTARG requires an argument." >&2
 			exit 1
 			;;
 		\?)
diff --git a/main_tools/FirstPass.sh b/main_tools/FirstPass.sh
index 673c3b0..436ac87 100755
--- a/main_tools/FirstPass.sh
+++ b/main_tools/FirstPass.sh
@@ -35,8 +35,8 @@ if [ -e $FIRSTPASS_CONFIG_FILE ]
 then
 	. $FIRSTPASS_CONFIG_FILE
 else
-	echo "ERROR : Can't find configuration file $FIRSTPASS_CONFIG_FILE" > /dev/stderr
-	echo "exit" > /dev/stderr
+	echo "ERROR : Can't find configuration file $FIRSTPASS_CONFIG_FILE" >&2
+	echo "exit" >&2
 	exit 1
 fi
 
@@ -73,7 +73,7 @@ do
             RERUN=1
             ;;
 		:)
-			echo "Option -$OPTARG requires an argument." > /dev/stderr
+			echo "Option -$OPTARG requires an argument." >&2
 			exit 1
 			;;
 		\?)
@@ -228,12 +228,12 @@ then
     if [ $? -eq 1 ]
     then
         print_log_file "$ERROFILE" "ERROR [$(date +'%d/%m/%y %H:%M:%S')] Creating PLP file : $PLP_FILE"
-        echo "[${BASENAME}] ERROR : ${BASENAME} check $ERRORFILE file" > /dev/stderr
+        print_error "[${BASENAME}] -> exit, Check $ERRORFILE file"
         exit 1
     fi
 fi
 
-rm $OUTPUT_DIR_BASENAME/list.tmp
+rm $OUTPUT_DIR_BASENAME/list.tmp 2> /dev/null
 
 #------------------------------#
 # S/NS + SPEAKERS SEGMENTATION #
@@ -358,22 +358,22 @@ do
 done
 
 ## Check missing seg and log it
-if [ $CHECK -eq 1 ]
+if [ "$CHECK" -eq 1 ]
 then
     ls $RES_DIR/*.seg | sed -e "s|$RES_DIR\/||g" | sed -e 's/\.seg//' | sort > ${OUTPUT_DIR_BASENAME}/.tmp
-    todo=$(cat ${OUTPUT_DIR_BASENAME}/plp.lst | wc -l)
-    if [ $todo -eq 0 ]; then todo=1;fi
+    todo=$(cat ${OUTPUT_DIR_BASENAME}/plp.lst 2> /dev/null | wc -l)
+    if [ "$todo" -eq 0 ]; then todo=1;fi
     notdone=$(($todo - $(cat ${OUTPUT_DIR_BASENAME}/.tmp | wc -l)))
     pourcentage=$((($notdone*100)/$todo))
 
-    if [ $notdone -ne 0 ]
+    if [ "$notdone" -ne 0 ]
     then
-        print_error "[${BASENAME}] Check $ERRORFILE"
-        print_log_file "$ERRORFILE" "ERROR : Segs not done ["
-        diff ${OUTPUT_DIR_BASENAME}/plp.lst ${OUTPUT_DIR_BASENAME}/.tmp | grep -e "^< " | sed -e "s/< //" >> $ERRORFILE
-        print_log_file "$ERRORFILE" "] $pourcentage% $BASENAME"
+        print_error "[${BASENAME}] Check ${ERRORFILE}"
+        print_log_file "${ERRORFILE}" "ERROR : Segs not done ["
+        diff ${OUTPUT_DIR_BASENAME}/plp.lst ${OUTPUT_DIR_BASENAME}/.tmp | grep -e "^< " | sed -e "s/< //" >> ${ERRORFILE}
+        print_log_file "${ERRORFILE}" "] $pourcentage% $BASENAME"
     else
-        print_log_file "$LOGFILE" "P1 OK $BASENAME | $(date +'%d/%m/%y %H:%M:%S')"
+        print_log_file "$LOGFILE" "P1 OK ${BASENAME} | $(date +'%d/%m/%y %H:%M:%S')"
     fi
     rm ${OUTPUT_DIR_BASENAME}/.tmp
 fi
diff --git a/main_tools/RecomposePass.sh b/main_tools/RecomposePass.sh
index 530e7e5..b073736 100755
--- a/main_tools/RecomposePass.sh
+++ b/main_tools/RecomposePass.sh
@@ -59,7 +59,7 @@ do
             VERBOSE=$OPTARG
             ;;
 		:)
-			echo "Option -$OPTARG requires an argument." > /dev/null
+			echo "Option -$OPTARG requires an argument." >&2 
 			exit 1
 			;;
 		\?)
diff --git a/main_tools/SecondPass.sh b/main_tools/SecondPass.sh
index 869a39f..2f9ae1e 100755
--- a/main_tools/SecondPass.sh
+++ b/main_tools/SecondPass.sh
@@ -35,8 +35,8 @@ if [ -e $SECONDPASS_CONFIG_FILE ]
 then
 	. $SECONDPASS_CONFIG_FILE
 else
-	echo "ERROR : Can't find configuration file $SECONDPASS_CONFIG_FILE" > /dev/stderr
-    echo "exit" > /dev/stderr
+	echo "ERROR : Can't find configuration file $SECONDPASS_CONFIG_FILE" >&2
+    echo "exit" >&2
 	exit 1
 fi
 
@@ -73,11 +73,11 @@ do
             RERUN=1
             ;;
 		:)
-			echo "Option -$OPTARG requires an argument." > /dev/stderr
+			echo "Option -$OPTARG requires an argument." >&2
 			exit 1
 			;;
 		\?)
-			echo "BAD USAGE : unknow opton -$OPTARG" > /dev/stderr
+			echo "BAD USAGE : unknow opton -$OPTARG" >&2
 			exit 1
 			;;
 	esac
@@ -232,7 +232,7 @@ do
                 if [ $RERUN -eq 0 ] || ( [ ! -e $HMM/$speaker.hmm ] || [ -z $HMM/$speaker.hmm ] )
                 then
                     print_info "[${BASENAME}] $SPEERAL_TOOLS/mllrmap $SPEERAL_AM/${MODS[$i]}.hmm -LR -b$LST/$speaker.lst -d$PLP_DIR_P1/ -t.plp -i3 -c.seg -o$HMM/$speaker.hmm -a$RES_DIR_P1/" 3
-                    $SPEERAL_TOOLS/mllrmap $SPEERAL_AM/${MODS[$i]}.hmm -LR -b$LST/$speaker.lst -d$PLP_DIR_P1/ -t.plp -i3 -c.seg -o$HMM/$speaker.hmm -a$RES_DIR_P1/
+                    $SPEERAL_TOOLS/mllrmap $SPEERAL_AM/${MODS[$i]}.hmm -LR -b$LST/$speaker.lst -d$PLP_DIR_P1/ -t.plp -i3 -c.seg -o$HMM/$speaker.hmm -a$RES_DIR_P1/ 2> /dev/null
                 fi
 
                 if [ $CHECK -eq 1 ] && ( [ ! -e $HMM/$speaker.hmm ] || [ -z $HMM/$speaker.hmm ] )
@@ -250,7 +250,7 @@ do
                 if [ -s $HMM/$speaker.hmm ] && ( [ $RERUN -eq 0 ] || ( [ ! -e $HMM/$speaker.cls ] || [ -z $HMM/$speaker.cls ] ))
                 then
                     print_info "[${BASENAME}] $SPEERAL_TOOLS/gclust_pdf $HMM/$speaker.hmm $HMM/$speaker.cls -i $SPEERAL_AM/${MODS[$i]}.cls" 3
-                    $SPEERAL_TOOLS/gclust_pdf $HMM/$speaker.hmm $HMM/$speaker.cls -i $SPEERAL_AM/${MODS[$i]}.cls
+                    $SPEERAL_TOOLS/gclust_pdf $HMM/$speaker.hmm $HMM/$speaker.cls -i $SPEERAL_AM/${MODS[$i]}.cls 2> /dev/null
                 fi
                 if [ $CHECK -eq 1 ] && ( [ ! -e $HMM/$speaker.cls ] || [ -z $HMM/$speaker.cls ] )
                 then
@@ -280,7 +280,7 @@ do
                         print_log_file $LOGFILE "WARN : Speeral number of output ERROR $LST/$speaker.lst"
                         ls $RES_DIR/*.seg | grep -e "$speaker" | sed -e "s|$RES_DIR\/||" | sed -e 's/\.seg//' | sort > ${OUTPUT_DIR_BASENAME}/.tmp
                         print_log_file $LOGFILE "Segs (and treil) not done :\n["
-                        diff $LST/$speaker.lst ${OUTPUT_DIR_BASENAME}/.tmp  >> $LOGFILE
+                        diff $LST/$speaker.lst ${OUTPUT_DIR_BASENAME}/.tmp | grep -e "^< " | sed -e "s/< //" >> $LOGFILE
                         print_log_file $LOGFILE "] [$(date +'%d/%m/%y %H:%M:%S')]"
                         rm ${OUTPUT_DIR_BASENAME}/.tmp
                         #exit 1
diff --git a/main_tools/ThirdPass.sh b/main_tools/ThirdPass.sh
index 77fa438..8d724ba 100755
--- a/main_tools/ThirdPass.sh
+++ b/main_tools/ThirdPass.sh
@@ -70,7 +70,7 @@ do
             RERUN=1
             ;;
 		:)
-			echo "Option -$OPTARG requires an argument." > /dev/null
+			echo "Option -$OPTARG requires an argument." >&2
 			exit 1
 			;;
 		\?)
@@ -219,7 +219,7 @@ do
                         print_log_file $LOGFILE "WARN : Speeral number of output ERROR $LST/$speaker.lst"
                         ls $RES_DIR/*.seg | grep -e "$speaker" | sed -e "s|$RES_DIR\/||" | sed -e 's/\.seg//' | sort > ${OUTPUT_DIR_BASENAME}/.tmp
                         print_log_file $LOGFILE "Segs (and treil) not done :\n["
-                        diff $LST/$speaker.lst ${OUTPUT_DIR_BASENAME}/.tmp  >> $LOGFILE
+                        diff $LST/$speaker.lst ${OUTPUT_DIR_BASENAME}/.tmp | grep -e "^< " | sed -e "s/< //"  >> $LOGFILE
                         print_log_file $LOGFILE "] [$(date +'%d/%m/%y %H:%M:%S')]"
                         rm ${OUTPUT_DIR_BASENAME}/.tmp
                     fi
diff --git a/tools/scripts/Tools.sh b/tools/scripts/Tools.sh
index daf034b..0640c53 100755
--- a/tools/scripts/Tools.sh
+++ b/tools/scripts/Tools.sh
@@ -29,15 +29,15 @@ function print_message()
     if [ $# -eq 3 ]
     then
         # print error
-        if [ $1 -eq $ERROR ]; then echo -ne "###ERROR : $3\n" > /dev/stderr; return 0; fi
+        if [ $1 -eq $ERROR ]; then echo -ne " ###ERROR : $3\n" >&2 ; return 0; fi
         # check verbose level
         if [ $2 -le $VERBOSE ]
         then
             #for (( dec=1 ; $dec<$2 ; dec++ )); do echo -ne "\t"; done
             # print warn
-            if [ $1 = $WARN ]; then echo -ne "##WARNING : $3\n"; return 0; fi 
+            if [ $1 = $WARN ]; then echo -ne " ##WARNING : $3\n"; return 0; fi 
             # default info
-            echo -ne "#INFO : $3\n" 
+            echo -ne " #INFO : $3\n" 
         fi
     fi
 }
@@ -46,7 +46,10 @@ function print_message()
 # - message : error message to print
 function print_error()
 {
-    print_message $ERROR 3 "$1"
+    if [ $# -eq 1 ]
+    then
+        print_message $ERROR 3 "$1"
+    fi
 }
 
 # print_warn(message,[level])