Index: wafadmin/Scan.py===================================================================--- wafadmin/Scan.py (revision 1363)+++ wafadmin/Scan.py (working copy)@@ -94,7 +94,11 @@ for dep in lst: if not dep.m_name in seen: add_node_sig(dep)- m.update(tree.m_tstamp_variants[variant][node])+ try:+ tstamp = tree.m_tstamp_variants[variant][node]+ except KeyError:+ tstamp = tree.m_tstamp_variants[0][node]+ m.update(tstamp) # add the signatures of the input nodes for node in task.m_inputs: add_node_sig(node)