title: Value expression error: "[BC30456] 'RdlObjectModel' is not a member of 'Reporting Services'
body: <p>Stumbled on an obscure problem. Posting this because my searches of stack overflow did not find my answer. Hopefully this will help someone else.</p>
  
  <p>Problem:
  My reporting services report will compile, but at run-time provides an error along the lines of:</p>
  
  <p>[BC30456] 'RdlObjectModel' is not a member of 'Reporting Services'</p>
  
  <p>This happened after I copy/pasted an entire tablix over from one report to another.<br>
  After I reversed the change and removed the tablix, it worked again.<br>
  The original report with the tablix I'm copy/pasting works fine.</p>