diff --git a/conf/env.sample b/conf/env.sample
index 593faf8..c1fb654 100644
--- a/conf/env.sample
+++ b/conf/env.sample
@@ -62,5 +62,7 @@ REVISIONS_FREQUENCY=300
 # Sub-URI
 RAILS_RELATIVE_URL_ROOT=/
 
-# Enable public file server
+# Public file server
+# Empty is disabled
+# Any value is enabled
 RAILS_SERVE_STATIC_FILES=
diff --git a/scripts/change_url b/scripts/change_url
index 515f083..29023a0 100644
--- a/scripts/change_url
+++ b/scripts/change_url
@@ -29,6 +29,8 @@ ynh_script_progression --message="Loading installation settings..." --weight=1
 # Needed for helper "ynh_add_nginx_config"
 final_path=$(ynh_app_setting_get --app=$app --key=final_path)
 port=$(ynh_app_setting_get --app=$app --key=port)
+install_extensions=$(ynh_app_setting_get --app=$app --key=install_extensions)
+access_domain=$(ynh_app_setting_get --app=$app --key=access_domain)
 
 # Add settings here as needed by your application
 #db_name=$(ynh_app_setting_get --app=$app --key=db_name)
@@ -93,7 +95,7 @@ then
     domain="$old_domain"
     path_url="$new_path"
     # Create a dedicated nginx config
-    ynh_add_nginx_config "port"
+    ynh_add_nginx_config "port access_domain"
 fi
 
 # Change the domain for nginx
@@ -114,6 +116,26 @@ ynh_script_progression --message="Modifying a config file..." --weight=1
 config_file="$final_path/live/.env"
 ynh_replace_string --match_string="RAILS_RELATIVE_URL_ROOT=$old_path" --replace_string="RAILS_RELATIVE_URL_ROOT=$new_path" --target_file="$config_file"
 
+#=================================================
+# Modify Standard Notes - Extensions
+#=================================================
+if [ $install_extensions ]
+then
+    ynh_script_progression --message="Modify Standard Notes - Extensions..."  --weight=1
+
+    if [ $new_path = "/" ]
+    then
+        path=""
+    else
+        path=$new_path
+    fi
+
+    find "$final_path/live/public/extensions/src/" -name "*.json" -print0 | while read -d $'\0' file
+    do
+        ynh_replace_string --match_string='"url": "https://.*/extensions/src/' --replace_string='"url": "https://$domain$path/extensions/src/' --target_file="$file"
+    done
+fi
+
 #=================================================
 # SETUP FAIL2BAN
 #=================================================
diff --git a/scripts/install b/scripts/install
index 61cb3d3..f5c91a9 100755
--- a/scripts/install
+++ b/scripts/install
@@ -164,15 +164,15 @@ if [ $install_extensions ]
 then
     ynh_script_progression --message="Installing Standard Notes - Extensions..."  --weight=1
 
-    ynh_replace_string --match_string="RAILS_SERVE_STATIC_FILES=" --replace_string="RAILS_SERVE_STATIC_FILES=true" --target_file="$config_file"
-    
+    ynh_replace_string --match_string="^RAILS_SERVE_STATIC_FILES=.*$" --replace_string="RAILS_SERVE_STATIC_FILES=true" --target_file="$config_file"
+
     if [ $path_url = "/" ]
     then
         path=""
     else
         path=$path_url
     fi
-    
+
     find "$final_path/live/public/extensions/src/" -name "*.json" -print0 | while read -d $'\0' file
     do
         ynh_replace_string --match_string="__DOMAIN__PATH__" --replace_string="$domain$path" --target_file="$file"
diff --git a/scripts/upgrade b/scripts/upgrade
index 3c303fb..7a7cdc3 100755
--- a/scripts/upgrade
+++ b/scripts/upgrade
@@ -180,7 +180,7 @@ then
         exec_as "$app" env PATH=$PATH /opt/rbenv/versions/$RUBY_VERSION/bin/bundle config set with 'development'
         exec_as "$app" env PATH=$PATH /opt/rbenv/versions/$RUBY_VERSION/bin/bundle install
         exec_as "$app" env PATH=$PATH RAILS_ENV=production /opt/rbenv/versions/$RUBY_VERSION/bin/bundle exec rails db:create db:migrate --quiet
-        exec_as "$app" env PATH=$PATH RAILS_ENV=production /opt/rbenv/versions/$RUBY_VERSION/bin/bundle exec rails assets:precompile --quiet
+#        exec_as "$app" env PATH=$PATH RAILS_ENV=production /opt/rbenv/versions/$RUBY_VERSION/bin/bundle exec rails assets:precompile --quiet
     popd
 fi
 
@@ -189,9 +189,27 @@ fi
 #=================================================
 if [ $install_extensions ]
 then
-    ynh_script_progression --message="Installing Standard Notes - Extensions..."  --weight=1
+    ynh_script_progression --message="Reinstalling Standard Notes - Extensions..."  --weight=1
 
-    ynh_replace_string --match_string="RAILS_SERVE_STATIC_FILES=false" --replace_string="RAILS_SERVE_STATIC_FILES=true" --target_file="$config_file"
+    ynh_replace_string --match_string="^RAILS_SERVE_STATIC_FILES=.*$" --replace_string="RAILS_SERVE_STATIC_FILES=true" --target_file="$config_file"
+
+    if [ $path_url = "/" ]
+    then
+        path=""
+    else
+        path=$path_url
+    fi
+
+    find "$final_path/live/public/extensions/src/" -name "*.json" -print0 | while read -d $'\0' file
+    do
+        ynh_replace_string --match_string="__DOMAIN__PATH__" --replace_string="$domain$path" --target_file="$file"
+    done
+
+    find "../conf/" -name "ext_*.src" -print0 | while read -d $'\0' file
+    do
+    basename=$(basename -as .src $file)
+        ynh_setup_source  --dest_dir="$final_path/live/public/extensions/src/${basename#'ext_'}" --source_id="$basename"
+    done
 fi
 
 #=================================================