title: .Net Framework: exception in w3wp.exe
body: <p>I developed website with web forms in asp.net 3.5. I ran it with IIS. It worked good earlier. But exception occured suddenly, when I debugged it. Message was </p>
  
  <blockquote>
    <p>An unhandled Microsoft .Net Framework exception occured in w3wp.exe
    [XXXX]</p>
  </blockquote>
  
  <p>It occurs every time when I try to run my application, but when I run website with Cassini there is no exception. There is no exception, when I deploy html page on IIS. Problem occurs with .net application on IIS only.</p>
  
  <p>I tried many solutions which I had found here, but none resolved the problem.</p>
  
  <p>What's matter? Can anybody help? Thanks.</p>