title: The type or namespace name 'ProfileCommon' could not be found
body: <p>Gooday, I'm creating an ASP.NET with C# Website in Visual Studio. I used ProfileCommon and stumbled upon this error:</p>
  
  <blockquote>
    <p>The type or namespace name 'ProfileCommon' could not be found (are you
    missing a using directive or an assembly reference?)</p>
  </blockquote>
  
  <p>Hope it has a quick fix? <strong>What directive should I include?</strong> Thanks a lot.</p>
  
  <p>EDIT: Any advice? - After I installed this add-in:
  <a href="http://archive.msdn.microsoft.com/WebProfileBuilder/Release/ProjectReleases.aspx?ReleaseId=980" rel="noreferrer">http://archive.msdn.microsoft.com/WebProfileBuilder/Release/ProjectReleases.aspx?ReleaseId=980</a></p>
  
  <blockquote>
    <p><code>Error    1   The "BuildWebProfile" task failed unexpectedly.
    System.ArgumentNullException: String reference not set to an instance
    of a String. Parameter name: s    at
    System.Text.Encoding.GetBytes(String s)    at
    WebProfileBuilder.Builder.IsProfileSame()    at
    WebProfileBuilder.Builder.GenerateWebProfile(BuildWebProfile
    buildWebProfile)    at WebProfileBuilder.BuildWebProfile.Execute()<br>
    at
    Microsoft.Build.BuildEngine.TaskEngine.ExecuteInstantiatedTask(EngineProxy
    engineProxy, ItemBucket bucket, TaskExecutionMode howToExecuteTask,
    ITask task, Boolean&amp; taskResult)  Cinemax</code></p>
  </blockquote>