Index: openacs-4/packages/xotcl-core/tcl/cr-procs.tcl
===================================================================
RCS file: /usr/local/cvsroot/openacs-4/packages/xotcl-core/tcl/cr-procs.tcl,v
diff -u -r1.68 -r1.69
--- openacs-4/packages/xotcl-core/tcl/cr-procs.tcl	22 Jun 2018 20:11:55 -0000	1.68
+++ openacs-4/packages/xotcl-core/tcl/cr-procs.tcl	25 Jun 2018 15:03:02 -0000	1.69
@@ -1753,7 +1753,11 @@
     return $item_id
   }
   CrCache::Item instproc delete args {
-    ::xo::xotcl_object_cache flush [string trimleft [self] :]
+    set key [string trimleft [self] :]
+    # Do not try to flush autnamed entries
+    if {[string is integer $key] } {
+        ::xo::xotcl_object_cache flush $key
+    }
     xo::xotcl_object_type_cache flush -tree_key ${:parent_id} ${:parent_id}-[:name]
     next
   }