Where I can change it? I have deleted BlockNew.VC.db 
BlockNew.vcxproj :
  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|x64'">
    <LinkIncremental>true</LinkIncremental>
    <IncludePath>bitdev;c:\boost;c:\Program Files\MySQL\Connector.C++ 1.1\include;$(VC_IncludePath);$(WindowsSDK_IncludePath);</IncludePath>
    <LibraryPath>c:\boost\stage\lib;c:\Program Files\MySQL\Connector.C++ 1.1\lib\opt;$(VC_LibraryPath_x64);$(WindowsSDK_LibraryPath_x64);$(NETFXKitsDir)Lib\um\x64</LibraryPath>
  </PropertyGroup>