title: Visual Basic 6 project lost reference to all user-defined types and will not compile
body: <p>I committed some working, compiling additions to Subversion using TortiseSVN one day ago, closed down Visual Basic 6.0 (SP6), and today when I opened the project, the IDE will not compile the project.  </p>
  
  <p>The error that I receive is: <strong>Compile Error: User-defined type is not defined</strong>.</p>
  
  <p>Also, when I try to go to the definition of <strong>ANY</strong> type, say <strong>MSComm</strong> or <strong>Byte</strong>, I get the message: <strong>Identifier under cursor is not recognized</strong>.</p>
  
  <p>The only changes to the VBP files that I see using the TortiseSVN diff viewer are the additions of the <strong>Class</strong> files that I added.</p>