diff --git a/install_mysql-5.7.sh b/install_mysql-5.7.sh
index d74ae8d..73e75f9 100755
--- a/install_mysql-5.7.sh
+++ b/install_mysql-5.7.sh
@@ -591,7 +591,7 @@ echo ""
 ## -
 if [ -d $logdir ]; then
    echononl "Verschiebe exitierendes Logverzeichnis ..."
-   mv ${logdir $logdir}.$_backup_date
+   mv "$logdir" "${logdir}.$_backup_date"
    if [ "$?" = "0" ]; then
       echo_ok
    else
@@ -1292,21 +1292,23 @@ if $SYMLINK_INITSCRIPT ; then
 fi
 
 
-echononl "Füge `dirname $MYSQL_INSTALL_DIR`/mysql/bin zur PATH Variable hinzu .."
+_checkdir="$(dirname "$MYSQL_INSTALL_DIR")/mysql/bin"
+echononl "Füge '$_checkdir' zur PATH Variable hinzu .."
 if [ -f /etc/profile ]; then
-   _mysql_bin_dir="`dirname $MYSQL_INSTALL_DIR`/mysql/bin"
-   if ! grep -e "PATH=.*$_mysql_bin_dir" /etc/profile > /dev/null 2<&1 ; then
+   if ! grep -e "$_checkdir" /etc/profile > /dev/null 2<&1 ; then
       echo "" >> ${logdir}/main.log
-      echo "perl -i -n -p -e \"s#^([ ]*export[ ]*PATH.*$)#check_dir=\$_mysql_bin_dir\nif [ -d \\\"\\\\\\\$check_dir\\\" ];then\n   PATH=\\\\\\\${check_dir}:\\\\\\\$PATH\nfi\n\n\1#\" /etc/profile" >> ${logdir}/main.log     2<&1
-      perl -i -n -p -e "s#^([ ]*export[ ]*PATH.*$)#check_dir=$_mysql_bin_dir\nif [ -d \"\\\$check_dir\" ];then\n   PATH=\\\${check_dir}:\\\$PATH\nfi\n\n\1#" /etc/profile >> ${logdir}/main.log     2<&1
+      echo "perl -i -n -p -e \"s#^([ ]*export[ ]*PATH.*$)#check_dir=\$_checkdir\nif [ -d \\\"\\\\\\\$check_dir\\\" ];then\n   PATH=\\\\\\\${check_dir}:\\\\\\\$PATH\nfi\n\n\1#\" /etc/profile" >> ${logdir}/main.log     2<&1
+
+      perl -i -n -p -e "s#^([ ]*export[ ]*PATH.*$)#check_dir=$_checkdir\nif [ -d \"\\\$check_dir\" ];then\n   PATH=\\\${check_dir}:\\\$PATH\nfi\n\n\1#" /etc/profile >> ${logdir}/main.log     2<&1
+
       if [ "$?" = "0" ]; then
          echo_ok
       else
          echo_failed
       fi
 
-      if ! echo "$PATH" | grep $_mysql_bin_dir >> ${logdir}/main.log 2>&1 ; then 
-         export PATH=${_mysql_bin_dir}:$PATH
+      if ! echo "$PATH" | grep $_checkdir >> ${logdir}/main.log 2>&1 ; then 
+         export PATH=${_checkdir}:$PATH
       fi
 
    else
@@ -1438,9 +1440,11 @@ _new_cnf_needed=false
 if $UPDATE_MYSQL ; then
    echononl "Copy 'my.cnf from old installation to the new one.."
    echo "" >> ${logdir}/main.log
-   echo "cp -a \"$(realpath ${MYSQL_CUR_INSTALL_DIR}/my.cnf)\" \"${MYSQL_INSTALL_DIR}/my.cnf\"" >> ${logdir}/main.log
-   if [[ -f "${MYSQL_CUR_INSTALL_DIR}/my.cnf" ]] ; then
-      cp -a "$(realpath ${MYSQL_CUR_INSTALL_DIR}/my.cnf)" "${MYSQL_INSTALL_DIR}/my.cnf" >> ${logdir}/main.log
+   if [[ "$CURRENT_VERSION" = "$MYSQL_VERSION" ]] ; then
+      echo "cp -a \"$(realpath ${MYSQL_CUR_INSTALL_DIR}).${_backup_date}/my.cnf\" \"${MYSQL_INSTALL_DIR}/my.cnf\"" \
+         >> ${logdir}/main.log
+      cp -a "$(realpath ${MYSQL_CUR_INSTALL_DIR}).${_backup_date}/my.cnf" "${MYSQL_INSTALL_DIR}/my.cnf" \
+         >> ${logdir}/main.log 2>&1
       if [ "$?" = "0" ]; then
          echo_ok
       else
@@ -1449,7 +1453,20 @@ if $UPDATE_MYSQL ; then
          error "Konnte Konfigurationsdatei 'my.cnf' nicht vom alten in das neue Installations Verz.kopieren.."
       fi
    else
-      echo_skipped
+      echo "cp -a \"$(realpath ${MYSQL_CUR_INSTALL_DIR})/my.cnf\" \"${MYSQL_INSTALL_DIR}/my.cnf\"" \
+         >> ${logdir}/main.log
+      cp -a "$(realpath ${MYSQL_CUR_INSTALL_DIR}/)my.cnf" "${MYSQL_INSTALL_DIR}/my.cnf" \
+         >> ${logdir}/main.log 2>&1
+      if [ "$?" = "0" ]; then
+         echo_ok
+      else
+         echo_failed
+         _new_cnf_needed=true
+         error "Konnte Konfigurationsdatei 'my.cnf' nicht vom alten in das neue Installations Verz.kopieren.."
+      fi
+   fi
+
+   if [[ ! -f "${MYSQL_INSTALL_DIR}/my.cnf" ]] ; then
       _new_cnf_needed=true
    fi
 fi
@@ -2394,6 +2411,8 @@ else
    error Konnte MySQL Datenbankserver nicht starten..
 fi
 
+sleep 2
+
 if ! $UPDATE_MYSQL ; then
 
    ## - Delete rows with empty 'User' from table mysql.user
@@ -2456,11 +2475,11 @@ _sys_maint_cnf_needed=false
 if $UPDATE_MYSQL ; then
    echononl "Copy 'sys-maint.cnf from old installation to the new one.."
    echo "" >> ${logdir}/main.log
-   echo "cp -a \"$(realpath ${MYSQL_CUR_INSTALL_DIR}/sys-maint.cnf)\" \"${MYSQL_INSTALL_DIR}/sys-maint.cnf\"" \
-      >> ${logdir}/main.log
-   if [[ -f "${MYSQL_CUR_INSTALL_DIR}/sys-maint.cnf" ]] ; then
-      cp -a "$(realpath ${MYSQL_CUR_INSTALL_DIR}/sys-maint.cnf)" "${MYSQL_INSTALL_DIR}/sys-maint.cnf" \
+   if [[ "$CURRENT_VERSION" = "$MYSQL_VERSION" ]] ; then
+      echo "cp -a \"$MYSQL_INSTALL_DIR.$_backup_date/sys-maint.cnf\" \"${MYSQL_INSTALL_DIR}/sys-maint.cnf\"" \
          >> ${logdir}/main.log
+      cp -a $MYSQL_INSTALL_DIR.$_backup_date/sys-maint.cnf "${MYSQL_INSTALL_DIR}/sys-maint.cnf" \
+         >> ${logdir}/main.log 2>&1
       if [ "$?" = "0" ]; then
          echo_ok
       else
@@ -2469,6 +2488,20 @@ if $UPDATE_MYSQL ; then
          error "Konnte Konfigurationsdatei 'sys-maint.cnf' nicht vom alten in das neue Installations Verz.kopieren.."
       fi
    else
+      echo "cp -a \"$(realpath ${MYSQL_CUR_INSTALL_DIR}/sys-maint.cnf)\" \"${MYSQL_INSTALL_DIR}/sys-maint.cnf\"" \
+         >> ${logdir}/main.log
+      cp -a "$(realpath ${MYSQL_CUR_INSTALL_DIR}/sys-maint.cnf)" "${MYSQL_INSTALL_DIR}/sys-maint.cnf" \
+         >> ${logdir}/main.log 2>&1
+      if [ "$?" = "0" ]; then
+         echo_ok
+      else
+         echo_failed
+         _sys_maint_cnf_needed=true
+         error "Konnte Konfigurationsdatei 'sys-maint.cnf' nicht vom alten in das neue Installations Verz.kopieren.."
+      fi
+   fi
+
+   if [[ ! -f "${MYSQL_INSTALL_DIR}/sys-maint.cnf" ]] ; then
       _sys_maint_cnf_needed=true
    fi
 fi