Index: openacs-4/packages/acs-subsite/www/shared/portrait-bits.tcl
===================================================================
RCS file: /usr/local/cvsroot/openacs-4/packages/acs-subsite/www/shared/portrait-bits.tcl,v
diff -u -N -r1.10.2.6 -r1.10.2.7
--- openacs-4/packages/acs-subsite/www/shared/portrait-bits.tcl	6 Jun 2016 18:28:01 -0000	1.10.2.6
+++ openacs-4/packages/acs-subsite/www/shared/portrait-bits.tcl	27 Mar 2017 10:49:05 -0000	1.10.2.7
@@ -61,7 +61,7 @@
                         where revision_id = :revision_id
                     } -file $input_file
                     exec convert $input_file -resize $size $filename
-                    file delete $input_file
+                    file delete -- $input_file
                 }
                 default {
                     ad_log warning "unsupported storage type for portraits: $itemInfo(storage_type)"