title: sqlschemacompare on Visual studio 2012
body: <p>When I try to compare my database project to an existing database it displays the following error:</p>
  
  <blockquote>
    <p><strong>The write operation failed. You must first acquire write access from DataSchemaModelController. E:\SRC SF\LIBRIDB\TePuna.scmp</strong></p>
  </blockquote>
  
  <p>Sql Server Version is 2012 Dev Edition</p>
  
  <p>This happened after I reinstalled visual studio and sql server.</p>
  
  <p>I have also installed SQL Server Data Tools 2012.</p>
  
  <p>I searched with the same error on google but found nothing.</p>
  
  <p>Any help is appreciated.</p>