Error when launching Ionic Lab


I’m unable to use Ionic Lab. Every time I try launching it, I get the following error (on OSX 10.10.5) -

A JavaScript error occured in the browser process
Uncaught Exception:
TypeError: Cannot read property ‘length’ of null
at SyncWriteStream.write (fs.js:1932:38)
at Object.execFileSync (child_process.js:463:20)
at Function.module.exports.sync (/Applications/Ionic
at module.exports (/Applications/Ionic
at Object. (/Applications/Ionic
at Module._compile (module.js:428:26)
at Object.Module._extensions…js (module.js:446:10)
at Module.load (module.js:353:32)
at Function.Module._load (module.js:308:12)
at Object. (/Applications/Ionic

There is another post on the same issue, from a couple of months ago with no replies. Hoping this will get some traction. Eagerly awaiting a solution. Thanks in advance.

Already tried to reinstall it?