Out of memory?

It's awesome to have such an easy-to-use tool and to have results in minutes.

Yeah second that. Probably it's just the nature of the forum that you hear mostly about problems - and that's the purpose of this thread :) - but some praise can't be bad. For example I was playing with switches recently and was blown away by setWatch(). On Arduino doing timers and debouncing never felt intuitive to me, but on Espruino it's a pleasure. Thanks!