diff --git a/mkdocs/build_website.sh b/mkdocs/build_website.sh
index 9f586e80..c404272f 100755
--- a/mkdocs/build_website.sh
+++ b/mkdocs/build_website.sh
@@ -46,7 +46,12 @@ elif [[ "${MKDOCS_SERVE}" == "B" ]]; then
     mkdocs build
 else
     mkdocs serve
-fi    
+fi
+exitcode=$?
+if [ $exitcode -ne 0 ]; then
+    echo "**** Build Error ***"
+    exit 1
+fi
 # restore svg bits
 rm -rf docs
 #cd docs
diff --git a/mkdocs/install_mkdocs.sh b/mkdocs/install_mkdocs.sh
index 1656bb88..cc99273c 100755
--- a/mkdocs/install_mkdocs.sh
+++ b/mkdocs/install_mkdocs.sh
@@ -14,17 +14,19 @@ if [[ -z "$VIRTUAL_ENV" ]]; then
 else
     USEROPT=
 fi
-python3 -m pip install --upgrade pip --quiet  $USEROPT
-python3 -m pip install  MarkupSafe --use-pep517 --quiet $USEROPT
-##python3 -m pip install mkdocs==1.3.1 --quiet $USEROPT
-#python3 -m pip install mkdocs==1.4.0 --quiet $USEROPT
-python3 -m pip install mkdocs-material --quiet $USEROPT
-python3 -m pip install git+https://github.com/cmitu/mkdocs-altlink-plugin/ --use-pep517 --quiet $USEROPT
-python3 -m pip install python-markdown-math --quiet $USEROPT
-python3 -m pip install install pymdown-extensions --quiet $USEROPT
-#python3 -m pip install install mkdocs-with-pdf --quiet $USEROPT
-python3 -m pip install install mkdocs-print-site-plugin --quiet $USEROPT
-python3 -m pip install  mkdocs-bibtex --use-pep517 --quiet $USEROPT
-python3 -m pip install  pandoc --use-pep517 --quiet $USEROPT
-python3 -m pip install  pypandoc_binary --use-pep517 --quiet $USEROPT
-python3 -m pip install install git+https://github.com/flywire/caption --use-pep517 --quiet $USEROPT
+QUIET=--quiet
+#QUIET=
+python3 -m pip install --upgrade pip $QUIET  $USEROPT
+python3 -m pip install  MarkupSafe --use-pep517 $QUIET $USEROPT
+python3 -m pip install mkdocs==1.4.3 $QUIET $USEROPT
+python3 -m pip install mkdocs-material==9.1.18 $QUIET $USEROPT
+python3 -m pip install git+https://github.com/cmitu/mkdocs-altlink-plugin/ --use-pep517 $QUIET $USEROPT
+python3 -m pip install python-markdown-math $QUIET $USEROPT
+python3 -m pip install install pymdown-extensions $QUIET $USEROPT
+#python3 -m pip install install mkdocs-with-pdf $QUIET $USEROPT
+python3 -m pip install  mkdocs-bibtex --use-pep517 $QUIET $USEROPT
+python3 -m pip install  pandoc --use-pep517 $QUIET $USEROPT
+python3 -m pip install  pypandoc_binary --use-pep517 $QUIET $USEROPT
+python3 -m pip install install git+https://github.com/flywire/caption --use-pep517 $QUIET $USEROPT
+python3 -m pip install install mkdocs-print-site-plugin $QUIET $USEROPT
+pip freeze