Can't make board work after unplug/reset.

I have the same problem, simple to reproduce.

reset the board, an add this code "setInterval("digitalWrite(LED1,l=!l);",200);"
dump shows then:

dump()
var l = false;
setInterval("digitalWrite(LED1,l=!l);", 200);
=undefined

after "save();" and a reboot I got this code:

dump();
var l = true;
digitalWrite(A13,1);
=undefined