Index: openacs-4/packages/tasks/lib/tasks.tcl
===================================================================
RCS file: /usr/local/cvsroot/openacs-4/packages/tasks/lib/tasks.tcl,v
diff -u -r1.30 -r1.31
--- openacs-4/packages/tasks/lib/tasks.tcl	19 Oct 2006 17:05:01 -0000	1.30
+++ openacs-4/packages/tasks/lib/tasks.tcl	23 Nov 2006 11:51:33 -0000	1.31
@@ -27,6 +27,8 @@
 if { ![exists_and_not_null package_id] } { 
     set package_id [ad_conn package_id]
 }
+if { ![info exists assignee_id] } { set assignee_id {} }
+
 set package_url [apm_package_url_from_id $package_id]
 set optional_params {start_date end_date page_size hide_elements default_assignee_id}
 set required_params {object_query object_ids object_id assignee_query assignee_ids assignee_id}
@@ -311,9 +313,9 @@
     if { [exists_and_not_null selected_assignee_id] } {
 	set assignee_query '${selected_assignee_id}'
     } else {
-	if { [info exists assignee_ids] } {
+	if { [exists_and_not_null assignee_ids] } {
 	    set assignee_query [template::util::tcl_to_sql_list $assignee_ids]
-	} elseif { [info exists assignee_id] } {
+	} elseif { [exists_and_not_null assignee_id] } {
 	    set assignee_query '$assignee_id'
 	}
     }