Error while running command after build
_I am Julien Deswaef_

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| Reporting a bug or issue
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Downloaded a fresh install of react-sketchapp. Trying to run the basic example

**Observed behavior:** Here is the full log:
```
$ npm run render

> basic-setup@1.0.0 render […]/react-sketchapp/examples/basic-setup
> skpm build --watch --run

🖨  Copied src/manifest.json in 8ms
babel-preset-env: `DEBUG` option

Using targets:
{
  "android": "30",
  "chrome": "35",
  "edge": "14",
  "explorer": "9",
  "firefox": "52",
  "safari": "8",
  "ucandroid": "1"
}

Modules transform: false

Using plugins:
  check-es2015-constants {"android":"30","chrome":"35","explorer":"9","safari":"8","ucandroid":"1"}
  transform-es2015-arrow-functions {"android":"30","chrome":"35","explorer":"9","safari":"8","ucandroid":"1"}
  transform-es2015-block-scoped-functions {"android":"30","chrome":"35","explorer":"9","safari":"8","ucandroid":"1"}
  transform-es2015-block-scoping {"android":"30","chrome":"35","explorer":"9","safari":"8","ucandroid":"1"}
  transform-es2015-classes {"android":"30","chrome":"35","explorer":"9","safari":"8","ucandroid":"1"}
  transform-es2015-computed-properties {"android":"30","chrome":"35","explorer":"9","ucandroid":"1"}
  transform-es2015-destructuring {"android":"30","chrome":"35","edge":"14","explorer":"9","firefox":"52","safari":"8","ucandroid":"1"}
  transform-es2015-duplicate-keys {"android":"30","chrome":"35","explorer":"9","safari":"8","ucandroid":"1"}
  transform-es2015-for-of {"android":"30","chrome":"35","edge":"14","explorer":"9","firefox":"52","safari":"8","ucandroid":"1"}
  transform-es2015-function-name {"android":"30","chrome":"35","edge":"14","explorer":"9","firefox":"52","safari":"8","ucandroid":"1"}
  transform-es2015-literals {"android":"30","chrome":"35","explorer":"9","firefox":"52","safari":"8","ucandroid":"1"}
  transform-es2015-object-super {"android":"30","chrome":"35","explorer":"9","safari":"8","ucandroid":"1"}
  transform-es2015-parameters {"android":"30","chrome":"35","explorer":"9","firefox":"52","safari":"8","ucandroid":"1"}
  transform-es2015-shorthand-properties {"android":"30","chrome":"35","explorer":"9","safari":"8","ucandroid":"1"}
  transform-es2015-spread {"android":"30","chrome":"35","explorer":"9","safari":"8","ucandroid":"1"}
  transform-es2015-sticky-regex {"android":"30","chrome":"35","explorer":"9","safari":"8","ucandroid":"1"}
  transform-es2015-typeof-symbol {"chrome":"35","explorer":"9","safari":"8","ucandroid":"1"}
  transform-es2015-unicode-regex {"android":"30","chrome":"35","explorer":"9","safari":"8","ucandroid":"1"}
  transform-exponentiation-operator {"android":"30","chrome":"35","explorer":"9","safari":"8","ucandroid":"1"}
  syntax-trailing-function-commas {"android":"30","chrome":"35","explorer":"9","safari":"8","ucandroid":"1"}
error Error while running the command after build
2017-06-26 15:28:16.419 coscript[62413:25812287] Exception: (null)

[NOTE: this exception originated in the server.]
[NOTE: this exception originated in the server.]
*** Object does not implement or has different method signature for selector 'hasExtension:'


⛏  Built ./my-command.js in 1473ms
```

**How to reproduce:** 
`npm run render` on `basic-setup` example

**Sketch version:** 44.1