title: Very Odd situation with CrystalReport and/or Visual studio 2010 I don't know maybe .Net Framework
body: <p>I faced a very odd problem It seems very funny looks like some stuffs having a fun with me.
  I'm using Crystal-Report Version 13.0.2000.0 and Visual Studio 2010. Number of days ago I got a error related with my Crystal-Report, that was :</p>
  
  <blockquote>
    <p>Could not load file or assembly 'file:///C:\Program Files (x86)\SAP BusinessObjects\Crystal Reports for .NET Framework 4.0\Common\SAP BusinessObjects Enterprise XI 4.0\win32_x86\dotnet1\crdb_adoplus.dll' or one of its dependencies. The system cannot find the file specified.</p>
  </blockquote>
  
  <p>After googling I found <a href="http://www.spyriadis.net/2010/06/crystal-reports-framework-4-crdb_adoplus-dll/" rel="noreferrer">solution</a>, Then I added the following code to app.config file and It worked well, I had no error, no exception.</p>
  
  <pre><code>&lt;startup useLegacyV2RuntimeActivationPolicy="true"&gt;
  &lt;supportedRuntime Version="v4.0" sku=".NETFramework, Version=v4.0" /&gt;
  &lt;/startup&gt;
  </code></pre>
  
  <p>Today when I wanted to use same solution in my other project it showed the message that I should download .NetFrwamework 4.0 and It causes project to not run. I thought I missed something in configuration so I went to look exactly what configurations I did in previous project. Interesting point is here when I opened the project it shows me same message to download .NetFramework 4.0, while It worked very well number of days ago and I don't have any problem with that. But now .... . </p>
  
  <p>I don't know what is the problem.
  Any advice will be helpful.</p>