Index: openacs-4/packages/xowf/lib/inclass-exam.wf
===================================================================
RCS file: /usr/local/cvsroot/openacs-4/packages/xowf/lib/inclass-exam.wf,v
diff -u -r1.1.2.16 -r1.1.2.17
--- openacs-4/packages/xowf/lib/inclass-exam.wf	17 Apr 2020 21:33:04 -0000	1.1.2.16
+++ openacs-4/packages/xowf/lib/inclass-exam.wf	18 Apr 2020 16:16:15 -0000	1.1.2.17
@@ -470,6 +470,7 @@
             ns_log notice "$r: [ns_set get $r revision_id] creation date [ns_set get $r creation_date]"
           }
 
+          set image ""
           ns_log notice "start date $start_date end_date $end_date / $start_clock $end_clock"
           foreach f $files {
             ns_log notice "check: $f"