• Try espruino-web-ide --dbg - I think this should give you a debugger window on the right-hand side where you can see errors reported.

    I'd be 99% certain it's saying something like can't find serialport v47 - it's what happens when the version of node (node --version) doesn't match the version of electron, so the compiled libraries installed by npm don't work.

    Sadly it seems to be a major problem with both nw.js and electron, but it's usually just fixed by upgrading node.js


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