Error on .NET BatchJobUtilities instance creation

Hello,

I'm having troubles creating a BatchJobUtilities instance. I followed the code on .NET examples (https://github.com/googleads/googleads-dotnet-lib/blob/master/examples/AdWords/CSharp/v201509/CampaignManagement/AddCompleteCampaignsUsingBatchJob.cs), but when i call 

BatchJobUtilities batchJobUploadHelper = new BatchJobUtilities(user)

I get a StackOverflowException (the AdWordsUser user object is already instantiated and working - i used it on reporting before).

Could you please help me?

Thank you in advance,

Rafael

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