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 -r1.45 -r1.46
--- openacs-4/packages/xotcl-core/tcl/cr-procs.tcl	21 Feb 2011 13:12:05 -0000	1.45
+++ openacs-4/packages/xotcl-core/tcl/cr-procs.tcl	30 Mar 2012 09:12:33 -0000	1.46
@@ -157,7 +157,10 @@
   }
 
   CrClass instproc unknown { obj args } {
-    my log "unknown called with $obj $args"
+    # When this happens, this is most likely an error. Ease debugging
+    # by writing the call stack to the error log.
+    ::xo::show_stack
+    my log "::xo::db::CrClass: unknown called with $obj $args"
   }
 
   #