/usr/local/tropo1/tro/tp_ec.rb:166:in `ec_logio_html': undefined method `+' for nil:NilClass (NoMethodError)<br />
	from /usr/local/tropo1/tro/tp_ec.rb:85:in `ec'<br />
	from /usr/local/tropo1/tropo.rb:110:in `serve'<br />
	from /usr/local/tropo1/tropo.rb:212:in `<main>'<br />