Problem with save()

Hi MaBe
if i write this

save(); var http = require("http");
http.createServer(function (req, res) {
  res.writeHead(200);
  res.end("Hello World"); 
}).listen(8080);

i get this

 http://espruino.com
 1v84.tve_master_588d193 Copyright 2015 G.Williams
WARNING: the esp8266 port is in beta!
Flash map 4MB:512/512, manuf 0xe0 chip 0x4016
>echo(0);
Erasing Flash.....
Writing...
Compressed 12276 bytes to 702
CheckUncaught ReferenceError: "s" is not defined
 at line 1 col 2
s.writeHead(200);
 ^

And after if i load()
it stays

>load()
=undefined
Loading 702 bytes from flash...

without doing nothing forcing me to switch reboot the esp