Closed Issue: npm install express from command line brings up error message inside VS [483]

I have a Windows Azure Blank Application where I installed azure module using npm UI. Then I go to command line and npm install express.

The following error message box appeared in VS:
```
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Error Reading package.json
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Error reading package.json file at 'C:\Users\huvalo\Documents\Visual Studio 2013\Projects\NodejsApp17\node_modules\express\node_modules\fresh\package.json'. The file may be parseable JSON but may contain objects with duplicate properties.



The following error occurred:



Can not add Newtonsoft.Json.Linq.JValue to Newtonsoft.Json.Linq.JObject.
---------------------------
OK
---------------------------
```