Index: openacs-4/packages/acs-api-browser/tcl/api-doc-init.tcl
===================================================================
RCS file: /usr/local/cvsroot/openacs-4/packages/acs-api-browser/tcl/api-doc-init.tcl,v
diff -u -r1.2.2.2 -r1.2.2.3
--- openacs-4/packages/acs-api-browser/tcl/api-doc-init.tcl	26 Feb 2022 14:44:24 -0000	1.2.2.2
+++ openacs-4/packages/acs-api-browser/tcl/api-doc-init.tcl	20 Apr 2022 08:57:51 -0000	1.2.2.3
@@ -20,7 +20,11 @@
     ad_schedule_proc -thread t -once t 1 ::api_add_calling_info_to_procdoc
 }
 
-::xo::api update_object_doc "" ::acs::db::[::acs::dc cget -driver]-[::acs::dc cget -backend] ""
+# When xotcl-core is enabled, update the OO documentation for
+# automatically-generated api
+if {[namespace::which ::xo::api] ne ""} {
+    ::xo::api update_object_doc "" ::acs::db::[::acs::dc cget -driver]-[::acs::dc cget -backend] ""
+}
 
 # Local variables:
 #    mode: tcl