title: Why Delphi says 'cannot resolve unit name xxx'?
body: <p>I'm working with Delphi2010 Enterprise Update 4.<br>
  When I'm opening my project in the IDE and displaying the mainform code, there are <strong>2 unit names underline in red</strong>.</p>
  
  <p><a href="http://img268.imageshack.us/img268/6475/unitnameunresolved.png">xxx http://img268.imageshack.us/img268/6475/unitnameunresolved.png</a>.</p>
  
  <p>I have <strong>verified</strong> that the path to the unit source is in the <code>Library path</code> and in the <code>Browsing path</code>.</p>
  
  <p>Surprisingly, when I'm doing a right-clicking on the unit and selecting <code>Open file at cursor</code>, it works (ie. delphi opens the right unit).</p>
  
  <p>Any idea about that ?</p>