title: Issue with 'continuationtoken' with Get-UsageAggregates PowerShell cmdlet
body: <p>I am following the blog, to fetch usage details for my subscription.</p>
  
  <p><a href="https://blogs.technet.microsoft.com/keithmayer/2015/06/30/export-azure-subscription-usage-to-csv-with-new-billing-api-and-powershell/" rel="nofollow noreferrer">https://blogs.technet.microsoft.com/keithmayer/2015/06/30/export-azure-subscription-usage-to-csv-with-new-billing-api-and-powershell/</a></p>
  
  <p>"Export Azure Usage via PowerShell using Get-UsageAggregates" (part 1)</p>
  
  <p>I am getting the below error:</p>
  
  <pre><code>Get-UsageAggregates : InvalidInput: Parameter continuationtoken was missing or had an unacceptable value.
  At line:30 char:18
  + ... usageData = Get-UsageAggregates -ReportedStartTime $reportedStartTime ...
  +                 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
      + CategoryInfo          : CloseError: (:) [Get-UsageAggregates], CloudException
      + FullyQualifiedErrorId : Microsoft.Azure.Commands.UsageAggregates.GetUsageAggregatesCommand
  </code></pre>
  
  <p>If anyone has worked around this, please let me know how to solve this?</p>