Index: openacs-4/packages/acs-authentication/tcl/sync-procs.tcl
===================================================================
RCS file: /usr/local/cvsroot/openacs-4/packages/acs-authentication/tcl/sync-procs.tcl,v
diff -u -r1.39 -r1.40
--- openacs-4/packages/acs-authentication/tcl/sync-procs.tcl	29 Dec 2017 11:22:07 -0000	1.39
+++ openacs-4/packages/acs-authentication/tcl/sync-procs.tcl	5 Jan 2018 14:25:12 -0000	1.40
@@ -540,11 +540,18 @@
         set authority_id [acs_user::get_element -user_id $user_id -element authority_id]
     }
 
+    #
+    # Try to sync. Many authorities do no support auth_sync_process,
+    # but these will issue an exception below.
+    #
+    # TODO: using a different error-code could make the code saver, by
+    # just ingnoring such cases.
+    #
     set elms [list]
     ad_try  {
         set elms [auth::sync::GetElements -authority_id $authority_id]
-    } on error {errorMsg} {
-        ad_log error "auth::sync::GetElements raised: $errorMsg"
+    } on error {errorMsg dict} {
+        ad_log error "auth::sync::GetElements raised: $errorMsg ($dict)"
     }
 
     return $elms