Index: openacs-4/packages/ims-ent/tcl/ims-ent-parser-procs.tcl
===================================================================
RCS file: /usr/local/cvsroot/openacs-4/packages/ims-ent/tcl/ims-ent-parser-procs.tcl,v
diff -u -r1.6 -r1.7
--- openacs-4/packages/ims-ent/tcl/ims-ent-parser-procs.tcl	21 Jul 2004 18:18:29 -0000	1.6
+++ openacs-4/packages/ims-ent/tcl/ims-ent-parser-procs.tcl	21 Jul 2004 18:20:54 -0000	1.7
@@ -279,7 +279,9 @@
 			     -roletype $roletype \
 			     -operation $operation]
 
-	    lappend member_list $user_id
+	    if ![empty_string_p $user_id] {
+		lappend member_list $user_id
+	    }
 
 	}