That should fix your problems, and it should also be significantly faster. There's also a 32 bit version which will work on significantly older computers.
Espruino is a JavaScript interpreter for low-power Microcontrollers. This site is both a support community for Espruino and a place to share what you are working on.
Ok, after much messing about there's a new version of the IDE available to download at http://www.espruino.com/Web+IDE
That should fix your problems, and it should also be significantly faster. There's also a 32 bit version which will work on significantly older computers.