Index: openacs-4/packages/richtext-ckeditor4/tcl/richtext-procs.tcl
===================================================================
RCS file: /usr/local/cvsroot/openacs-4/packages/richtext-ckeditor4/tcl/richtext-procs.tcl,v
diff -u -N -r1.14.2.13 -r1.14.2.14
--- openacs-4/packages/richtext-ckeditor4/tcl/richtext-procs.tcl	21 May 2021 07:40:57 -0000	1.14.2.13
+++ openacs-4/packages/richtext-ckeditor4/tcl/richtext-procs.tcl	22 Jul 2021 20:11:39 -0000	1.14.2.14
@@ -24,15 +24,15 @@
     # config file:
     #
     # ns_section ns/server/${server}/acs/richtext-ckeditor
-    #        ns_param CKEditorVersion   4.15.1
+    #        ns_param CKEditorVersion   4.16.1
     #        ns_param CKEditorPackage   full
     #        ns_param CKFinderURL       /acs-content-repository/ckfinder
     #        ns_param StandardPlugins   uploadimage
     #
     set ::richtext::ckeditor4::version [parameter::get \
                                             -package_id $package_id \
                                             -parameter CKEditorVersion \
-                                            -default 4.15.1]
+                                            -default 4.16.1]
 
     set ::richtext::ckeditor4::ckfinder_url [parameter::get \
                                                  -package_id $package_id \
@@ -234,7 +234,9 @@
         set cdn         //cdn.ckeditor.com/
 
         set suffix $version/$ck_package/ckeditor.js
-
+        ns_log notice "CKeditor4: check for locally installed file" \
+            $resourceDir/$version/$ck_package -> \
+            [file exists $resourceDir/$version/$ck_package]
         if {[file exists $resourceDir/$version/$ck_package]} {
             set prefix  $resourceUrl/$version
             set cdnHost ""
Index: openacs-4/packages/richtext-ckeditor4/www/sitewide-admin/download.tcl
===================================================================
RCS file: /usr/local/cvsroot/openacs-4/packages/richtext-ckeditor4/www/sitewide-admin/download.tcl,v
diff -u -N -r1.2.2.1 -r1.2.2.2
--- openacs-4/packages/richtext-ckeditor4/www/sitewide-admin/download.tcl	9 Feb 2020 15:48:07 -0000	1.2.2.1
+++ openacs-4/packages/richtext-ckeditor4/www/sitewide-admin/download.tcl	22 Jul 2021 20:11:39 -0000	1.2.2.2
@@ -3,7 +3,7 @@
 
     @creation-date Jan 04, 2017
 } {
-    {ck_package:word,notnull ""}
+    {ck_package:token,notnull ""}
     {version:word,notnull ""}
 }
 
Index: openacs-4/packages/xowiki/tcl/form-field-procs.tcl
===================================================================
RCS file: /usr/local/cvsroot/openacs-4/packages/xowiki/tcl/form-field-procs.tcl,v
diff -u -N -r1.284.2.163 -r1.284.2.164
--- openacs-4/packages/xowiki/tcl/form-field-procs.tcl	2 Jul 2021 16:33:11 -0000	1.284.2.163
+++ openacs-4/packages/xowiki/tcl/form-field-procs.tcl	22 Jul 2021 20:11:39 -0000	1.284.2.164
@@ -3156,7 +3156,7 @@
     # set the editor value from the spec, because the field class is
     # parsed before other options. Getting here without an editor,
     # will cause the code to fallback to the default from the global
-    # parameter, de-facto ingnoring the 'editor=' spec. One quick
+    # parameter, de-facto ignoring the 'editor=' spec. One quick
     # solution is to parse the spec here.
     regexp {,?editor=([^,]+)} ${:spec} m :editor
 
@@ -3439,9 +3439,9 @@
     {callback "/* callback code */"}
     {destroy_callback "/* callback code */"}
     {submit_callback ""}
-    {extraPlugins "xowikiimage"}
+    {extraPlugins ""}
     {extraAllowedContent {*(*)}}
-    {ck_package standard-all}
+    {ck_package standard}
     {templatesFiles ""}
     {templates ""}
     {contentsCss /resources/xowiki/ck_contents.css}
@@ -3552,10 +3552,26 @@
         # CDN. If we do not use standard-all, then we see an error
         # about a missing
         # ".../4.9.2/full/plugins/iframedialog/plugin.js". There
-        # exists a "iframe" and a "iframedialog" plugin for ckeditor4,
-        # the latter is not included in the standard builds (only in
-        # "-all").
+        # exists a default "iframe" and a "iframedialog" plugin for
+        # ckeditor4, the latter is not included in the standard builds
+        # (only in "-all").
         #
+        # UPDATE July 2021: The "*-all" ckpackages are gone for newer
+        # versions of CKEditor (e.g. 4.16.*) and it is unlikely that
+        # it will be revived for the standard packages. One can
+        # download the "iframedialog" plugin still from the addons
+        #
+        #    https://ckeditor.com/cke4/addon/iframedialog
+        #
+        # and add it manually to the downloaded tree in e.g.
+        #
+        #   richtext-ckeditor4/www/resources/4.16.1/standard/plugins/
+        #
+        # For the time being, we remove the "xowikiimage" plugin from
+        # the extraPlugins to make it working out of the box. This
+        # plugin should be rewritten using the current dialogs of
+        # ckeditor.
+        #
         ::richtext::ckeditor4::add_editor \
             -order 90 \
             -ck_package ${:ck_package} \