diff --git a/src/func/check_config b/src/func/check_config
new file mode 100755
index 0000000..8bed903
--- /dev/null
+++ b/src/func/check_config
@@ -0,0 +1,76 @@
+#!/bin/bash
+#remaster lib
+[ -d "<LIBDIR>" ] || { echo "LIBDIR not exist"; exit 1; }
+
+#check_config [log_file]
+function check_config() {
+
+    #LOG
+    {
+      log_file=$1
+      [ -z "$log_file" ] && log_file="/tmp/remaster_`date '+%Y-%m-%d'`"
+
+      if [ -f "$log_file" ]; then
+        echo > "$log_file"
+      else
+        #check if folder exist
+        [ -d "${log_file%/*}" ] || {
+            # N-> exit 3
+            echo "Directory for Log didnt exist"
+            exit 3
+        }
+        #create LOG
+        touch "$log_file"
+      fi
+    }
+
+
+
+    #Project
+    [ -f "<LIBDIR>/proj/$distro" ] || {
+        echo "No Project \"$distro\" is not supported" | tee -a "$log_file"
+        return 3
+    }
+
+    #live-system files
+    if [ -f "$iso_source" ]; then
+        if [ -n "$iso_destination" ] && [ -d "${iso_destination%/*}" ]; then
+            #Lable
+            [ -z "$iso_lable" ] && iso_lable="$distro"
+
+            echo 'iso_source -> iso_destination' | tee -a "$log_file"
+            echo 'iso_source -> squashfs [optinal]' | tee -a "$log_file"
+        else
+            if [ -n "$filesystem_source" ] && [ -d "${filesystem_source%/*}" ]; then
+                echo 'iso_source -> squashfs' | tee -a "$log_file"
+            else
+                # ERROR
+                echo "No corect AIM in Settings" | tee -a "$log_file"
+                return 3
+            fi
+        fi
+    else
+        if [ -f "$filesystem_source" ]; then
+            if [ -n "$iso_destination" ]; then
+                # ERROR
+                echo "only Squashfs source in Settings, cant creat ISO" | tee -a "$log_file"
+                return 3
+            else
+                echo 'squashfs -> squashfs' | tee -a "$log_file"
+            fi
+        else
+            # ERROR
+            echo "No corect Source in Settings" | tee -a "$log_file"
+            return 3
+        fi
+    fi
+
+
+
+
+}
+
+#this func is standalone executable
+[ -n "$1" ] && {
+    check_config $@
+}
diff --git a/src/proj/desinfect2017 b/src/proj/desinfect2017
new file mode 100644
index 0000000..e69de29
diff --git a/src/remaster.sh b/src/remaster.sh
index 8874202..17b3d2b 100755
--- a/src/remaster.sh
+++ b/src/remaster.sh
@@ -25,6 +25,23 @@ else
     exit 1
   fi
 fi
+#check LOG
+{
+  [ -z "$log_file" ] && log_file="/tmp/remaster_`date '+%Y-%m-%d'`"
+
+  if [ -f "$log_file" ]; then
+    echo > "$log_file"
+  else
+    #check if folder exist
+    [ -d "${log_file%/*}" ] || {
+        # N-> exit 3
+        echo "Directory for Log didnt exist"
+        exit 3
+    }
+    #create LOG
+    touch "$log_file"
+  fi
+}
 
 #####################################################################################
 ################## M o d e s ########################################################
@@ -32,8 +49,7 @@ fi
 
 #remaster.sh renew
 function main_renew() {
-
-  [ -f "$log_file" ] || touch "$log_file"
+  #Start LOG
   tail -f "$log_file" --pid="$$" &
 
   chroot_path="`mktemp -d`"
@@ -90,6 +106,9 @@ function main_renew() {
   check_dependency
   error_level="$?"; [ "$error_level" != "0" ] && on_exit $error_level >> "$log_file"
 
+  check_config "$log_file"
+  error_level="$?"; [ "$error_level" != "0" ] && on_exit $error_level >> "$log_file"
+
   check_update | tee -a "$log_file"
 
   [ "$distro" != "" ] && distro="_$distro"
@@ -195,8 +214,7 @@ function main_renew() {
 #remaster.sh update_pxe
 function main_update_pxe() {
 
-  [ "$log_file" == "" ] && log_file="`mktemp`"
-  [ -f "$log_file" ] || touch "$log_file"
+  #Start LOG
   tail -f "$log_file" --pid="$$" &
 
   chroot_path="`mktemp -d`"
@@ -245,6 +263,9 @@ function main_update_pxe() {
   check_dependency
   error_level="$?"; [ "$error_level" != "0" ] && on_exit $error_level >> "$log_file"
 
+  check_config "$log_file"
+  error_level="$?"; [ "$error_level" != "0" ] && on_exit $error_level >> "$log_file"
+
   [ "$distro" != "" ] && distro="_$distro"
 
   # 1. Entpacken der Dateien des Live-Systems
@@ -308,7 +329,7 @@ function main_update_pxe() {
 
 #remaster.sh update_iso #in arbeit
 function main_update_iso() {
-  [ -f "$log_file" ] || touch "$log_file"
+  #Start LOG
   tail -f "$log_file" --pid="$$" &
 
   chroot_path="`mktemp -d`"
@@ -367,6 +388,9 @@ function main_update_iso() {
   check_dependency
   error_level="$?"; [ "$error_level" != "0" ] && on_exit $error_level >> "$log_file"
 
+  check_config "$log_file"
+  error_level="$?"; [ "$error_level" != "0" ] && on_exit $error_level >> "$log_file"
+
   [ "$distro" != "" ] && distro="_$distro"
 
   # 2. Entpacke ISO
@@ -479,6 +503,9 @@ function main_update_iso() {
 
 ### Error Handlings ###
 
+#check_config [log_file]
+source <LIBDIR>/func/check_config
+
 #on_exit [error_level]
 source <LIBDIR>/func/on_exit