diff --git a/HISTORY.txt b/HISTORY.txt
index 71af813c..1187807f 100644
--- a/HISTORY.txt
+++ b/HISTORY.txt
@@ -1,3 +1,13 @@
+5.1.0r1 2018-03-06
+
+- For good reason, a recent change in sudo does not allow overwriting PWD.
+  That fouled up the installer's scheme for keeping track of the installer directory, causing helper scripts to be lost.
+  Fixed.
+  [smcmahon]
+
+- Packages included with the first 5.1.0 installer did not include some recipes used when installing via sudo.
+  [smcmahon]
+
 5.1.0 2018-03-02
 
 - Add to update_packages.py a mechanism to replace binary wheels with source tarballs.
diff --git a/buildme.sh b/buildme.sh
index 4daa4924..03e8189c 100755
--- a/buildme.sh
+++ b/buildme.sh
@@ -30,7 +30,7 @@ fi
 
 BASE_VER=5.1.0
 NEWVER=${BASE_VER}
-INSTALLER_REVISION=""
+INSTALLER_REVISION="-r1"
 
 SDIR=`pwd`
 
diff --git a/buildout_templates/buildout.cfg b/buildout_templates/buildout.cfg
index ae7b145e..e62b6b5c 100644
--- a/buildout_templates/buildout.cfg
+++ b/buildout_templates/buildout.cfg
@@ -198,6 +198,9 @@ zeo-address = 127.0.0.1:8100
 setuptools =
 zc.buildout =
 
+plone.recipe.command = 1.1
+plone.recipe.precompiler = 0.6
+
 Products.DocFinderTab = 1.0.5
 bobtemplates.plone = 2.0
 buildout.sanitycheck = 1.0.2
diff --git a/helper_scripts/main_install_script.sh b/helper_scripts/main_install_script.sh
index d218a0c1..f0722b9a 100755
--- a/helper_scripts/main_install_script.sh
+++ b/helper_scripts/main_install_script.sh
@@ -2,6 +2,8 @@
 # Copyright (c) 2008-2017 Plone Foundation. Licensed under GPL v 2.
 #
 
+INSTALLER_PWD=`pwd`
+
 # Path for Root install
 #
 # Path for server-mode install of Python/Zope/Plone
@@ -34,10 +36,10 @@ PLONE_GROUP=plone_group
 readonly FOR_PLONE=5.1.0
 readonly WANT_PYTHON=2.7
 
-readonly PACKAGES_DIR=packages
+readonly PACKAGES_DIR="${INSTALLER_PWD}/packages"
 readonly ONLINE_PACKAGES_DIR=opackages
-readonly HSCRIPTS_DIR=helper_scripts
-readonly TEMPLATE_DIR=buildout_templates
+readonly HSCRIPTS_DIR="${INSTALLER_PWD}/helper_scripts"
+readonly TEMPLATE_DIR="${INSTALLER_PWD}/buildout_templates"
 
 readonly PYTHON_URL=https://www.python.org/ftp/python/2.7.14/Python-2.7.14.tgz
 readonly PYTHON_MD5=cee2e4b33ad3750da77b2e85f2f8b724
@@ -58,7 +60,7 @@ case $LANG in
     #     ;;
     *)
         # default to English
-        . helper_scripts/locales/en/LC_MESSAGES/messages.sh
+        . "${HSCRIPTS_DIR}/locales/en/LC_MESSAGES/messages.sh"
         ;;
 esac
 
@@ -73,12 +75,9 @@ else
 fi
 
 
-# normalize
-PWD=`pwd`
-CWD="$PWD"
-PKG="$CWD/$PACKAGES_DIR"
+PKG="$PACKAGES_DIR"
 
-. helper_scripts/shell_utils.sh
+. "${INSTALLER_PWD}/helper_scripts/shell_utils.sh"
 
 usage () {
     eval "echo \"$USAGE_MESSAGE\""
@@ -108,7 +107,7 @@ INSTALL_ZEO=0
 
 USE_WHIPTAIL=0
 if [ "$BASH_VERSION" ] && [ "X$1" == "X" ]; then
-    . helper_scripts/whipdialog.sh
+    . "${INSTALLER_PWD}/helper_scripts/whipdialog.sh"
     USE_WHIPTAIL=1
 fi
 
@@ -530,8 +529,8 @@ PY_DIR=`dirname "$WITH_PYTHON"`
 PY_BASE=`basename "$WITH_PYTHON"`
 cd "$PY_DIR"
 PY_DIR=`pwd`
+cd "$INSTALLER_PWD"
 WITH_PYTHON="${PY_DIR}/${PY_BASE}"
-echo "$WITH_PYTHON"
 
 
 #############################
@@ -666,7 +665,7 @@ if [ "X$DEBUG_OPTIONS" = "Xyes" ]; then
     echo "DAEMON_USER=$DAEMON_USER"
     echo "BUILDOUT_USER=$BUILDOUT_USER"
     echo "ORIGIN_PATH=$ORIGIN_PATH"
-    echo "PWD=$PWD"
+    echo "PWD=$INSTALLER_PWD"
     echo "CWD=$CWD"
     echo "PKG=$PKG"
     echo "WITH_PYTHON=$WITH_PYTHON"
@@ -720,7 +719,7 @@ eval "echo \"$INSTALLING_NOW\""
 # create os users for root-level install
 if [ $ROOT_INSTALL -eq 1 ]; then
     # source user/group utilities
-    . helper_scripts/user_group_utilities.sh
+    . "${INSTALLER_PWD}/helper_scripts/user_group_utilities.sh"
 
     # see if we know how to do this on this platfrom
     check_ug_ability
@@ -798,7 +797,7 @@ if [ "X$BUILD_PYTHON" = "Xyes" ]; then
 
     PY_HOME="$PLONE_HOME/Python-${WANT_PYTHON}"
     WITH_PYTHON="${PY_HOME}/bin/python"
-    . helper_scripts/build_python.sh
+    . "${INSTALLER_PWD}/helper_scripts/build_python.sh"
 
 
     if "$WITH_PYTHON" "$CWD/$HSCRIPTS_DIR"/checkPython.py --without-ssl=${WITHOUT_SSL}; then
@@ -896,9 +895,9 @@ cd "$CWD"
 # we'll need into a tmp directory inside the install destination.
 WORKDIR="${PLONE_HOME}/tmp"
 mkdir "$WORKDIR" > /dev/null 2>&1
-cp -R ./buildout_templates "$WORKDIR"
-cp -R ./base_skeleton "$WORKDIR"
-cp -R ./helper_scripts "$WORKDIR"
+cp -R "${INSTALLER_PWD}/buildout_templates" "$WORKDIR"
+cp -R "${INSTALLER_PWD}/base_skeleton" "$WORKDIR"
+cp -R "${INSTALLER_PWD}/helper_scripts" "$WORKDIR"
 if [ $ROOT_INSTALL -eq 1 ]; then
     chown -R "$BUILDOUT_USER:$PLONE_GROUP" "$WORKDIR"
     find "$WORKDIR" -type d -exec chmod g+s {} \;
diff --git a/install.sh b/install.sh
index 9ddccf35..3ce5f0b8 100755
--- a/install.sh
+++ b/install.sh
@@ -84,8 +84,8 @@
 ORIGIN_PATH=`pwd`
 export ORIGIN_PATH
 # change to directory with script
-PWD=`dirname $0`
-cd $PWD
+INSTALLER_PWD=`dirname $0`
+cd "$INSTALLER_PWD"
 if which bash > /dev/null; then
     bash helper_scripts/main_install_script.sh "$@"
 else
diff --git a/version.txt b/version.txt
index fbcfc8ca..2a9b783e 100644
--- a/version.txt
+++ b/version.txt
@@ -1,2 +1,2 @@
 Plone version: 5.1.0 (with Zope 2.13.x, Python 2.7.x)
-Installer version: Unified Installer 5.1.0
+Installer version: Unified Installer 5.1.0-r1