--- trunk/installer-simple/bin/installer.sh.in	2014/01/03 14:00:30	2333
+++ trunk/installer-simple/bin/installer.sh.in	2014/01/03 14:03:32	2334
@@ -9,13 +9,30 @@
 
 INSTALLER_LIBDIR="%LIBDIR%"
 
-source %SYSCONFDIR%/installer.conf
+# configuration
+if [ -e %SYSCONFDIR%/installer.conf ]
+then
+	source %SYSCONFDIR%/installer.conf
+else
+	die "/etc/installer.conf not found"
+fi
 
 #images: (get ${CDIMAGENAME})
-source /mnt/cdrom/system/images.conf
+if [ -e /mnt/cdrom/system/images.conf ]
+then
+	source /mnt/cdrom/system/images.conf
+else
+	die "/mnt/cdrom/system/images.conf not found"
+fi
 
 #Includes
-source ${INSTALLER_LIBDIR}/functions/findhdd.sh > /dev/null
+if [ -e ${INSTALLER_LIBDIR}/functions/findhdd.sh ]
+then
+	source ${INSTALLER_LIBDIR}/functions/findhdd.sh > /dev/null
+else
+	die "${INSTALLER_LIBDIR}/functions/findhdd.sh not found"
+fi
+
 ### bugfix ###############################
 cdromdev="$(echo ${cdromdev} | sed 's/ //')"
 ########################################