Sign up causes console error: TypeError: Cannot read property 'context' of undefined

[n3ps]

Tried to sign up and I get this:

Exception in delivering result of invoking 'createUser': TypeError: Cannot read property 'context' of undefined
    at Object.userCallback (32ad8cf1c5a4faf2915d5e3dc4e276fb66fee095.js?meteor_js_resource=true:347)
    at o (32ad8cf1c5a4faf2915d5e3dc4e276fb66fee095.js?meteor_js_resource=true:270)
    at r (32ad8cf1c5a4faf2915d5e3dc4e276fb66fee095.js?meteor_js_resource=true:270)
    at n._callback (32ad8cf1c5a4faf2915d5e3dc4e276fb66fee095.js?meteor_js_resource=true:1)
    at n._maybeInvokeCallback (32ad8cf1c5a4faf2915d5e3dc4e276fb66fee095.js?meteor_js_resource=true:254)
    at n.receiveResult (32ad8cf1c5a4faf2915d5e3dc4e276fb66fee095.js?meteor_js_resource=true:254)
    at M._livedata_result (32ad8cf1c5a4faf2915d5e3dc4e276fb66fee095.js?meteor_js_resource=true:254)
    at M.onMessage (32ad8cf1c5a4faf2915d5e3dc4e276fb66fee095.js?meteor_js_resource=true:254)
    at 32ad8cf1c5a4faf2915d5e3dc4e276fb66fee095.js?meteor_js_resource=true:248
    at Array.forEach (<anonymous>)
    at u.forEachCallback (32ad8cf1c5a4faf2915d5e3dc4e276fb66fee095.js?meteor_js_resource=true:248)
    at k.socket.onmessage (32ad8cf1c5a4faf2915d5e3dc4e276fb66fee095.js?meteor_js_resource=true:248)
    at k.r.dispatchEvent (32ad8cf1c5a4faf2915d5e3dc4e276fb66fee095.js?meteor_js_resource=true:248)
    at k._dispatchMessage (32ad8cf1c5a4faf2915d5e3dc4e276fb66fee095.js?meteor_js_resource=true:248)
    at k._didMessage (32ad8cf1c5a4faf2915d5e3dc4e276fb66fee095.js?meteor_js_resource=true:248)
    at WebSocket.o.ws.onmessage (32ad8cf1c5a4faf2915d5e3dc4e276fb66fee095.js?meteor_js_resource=true:248)

[SachaG]

I think that probably means you already have an account with that email.