title: Dynamics NAV - SQL Server Report Builder - CommandText property has not been initialized
body: <p>I would like to start by describing what I am trying to do. I am working in Dynamics NAV 2015 attempting to create a custom report layout using Microsoft SQL Server Report Builder. The way it works is I am in NAV, I choose a custom report, and then I click 'Edit Layout'. The Report Builder pops up on its own and allows me to start working.</p>
  
  <p>The problem is that, even if I have a completely fresh report with nothing on it, I cannot preview the report. Instead I get the following error:</p>
  
  <pre><code>ExecuteReader: CommandText property has not been initialized
  ----------------------------
  Query execution failed for dataset 'DataSet_Result'.
  ----------------------------
  An error has occurred during report processing.
  ----------------------------
  An error occurred during local report processing.
  </code></pre>
  
  <p>The strange thing is that if I do work and save it, then go back into NAV and print the report, it works fine. I just can't preview it while I'm working on it in the Report Builder.</p>
  
  <p>Does anyone know why 'CommandText' would not be initialized automatically? Or where I would go to initialize it? I feel something may not be set up properly, but I can't find anything anywhere that has been helpful.</p>