title: multiple compiling errors with basic C++ application on VS2010 Beta 1
body: <p>I just recently installed VS2010 Beta 1 from the Microsoft website , I started a basic C++ Win32 Console Application , that generated the following code:</p>
  
  <pre><code>#include "stdafx.h"
  
  
  int _tmain(int argc, _TCHAR* argv[])
  {
  
  return 0;
  }
  </code></pre>
  
  <p>I tried compiling the code just to see how it runs and just then I encountered several(over a 100) compiling errors.</p>
  
  <p>Here is the first part of the build output:</p>
  
  <pre><code>1&gt;ClCompile:
  1&gt;  stdafx.cpp
  1&gt;c:\program files\microsoft visual studio 10.0\vc\include\crtdefs.h(520): error C2065: '_In_opt_z_' : undeclared identifier
  1&gt;c:\program files\microsoft visual studio 10.0\vc\include\crtdefs.h(520): error C2143: syntax error : missing ')' before 'const'
  1&gt;c:\program files\microsoft visual studio 10.0\vc\include\crtdefs.h(520): warning C4229: anachronism used : modifiers on data are ignored
  1&gt;c:\program files\microsoft visual studio 10.0\vc\include\crtdefs.h(520): error C2182: '_invalid_parameter' : illegal use of type 'void'
  1&gt;c:\program files\microsoft visual studio 10.0\vc\include\crtdefs.h(520): error C2491: '_invalid_parameter' : definition of dllimport data not allowed
  1&gt;c:\program files\microsoft visual studio 10.0\vc\include\crtdefs.h(520): error C2059: syntax error : ')'
  1&gt;c:\program files\microsoft visual studio 10.0\vc\include\crtdefs.h(527): error C2065: '_In_opt_z_' : undeclared identifier
  1&gt;c:\program files\microsoft visual studio 10.0\vc\include\crtdefs.h(527): error C2143: syntax error : missing ')' before 'const'
  1&gt;c:\program files\microsoft visual studio 10.0\vc\include\crtdefs.h(527): warning C4229: anachronism used : modifiers on data are ignored
  </code></pre>
  
  <p><a href="http://pastebin.com/m7e6f16a6" rel="noreferrer">pastebin</a> for the full list</p>
  
  <p>I thought maybe the include files got mixed up by some other compiler version I have installed previously( I have VS 2008 as well) so I reinstalled VS2010 just to overwrite the headers but that didn't do much.</p>
  
  <p>Thanks in advance for any help you might offer as I am helpless</p>