Installers should use proper program files directory depending on platform when executed from Windows OS x64.
That is, sqlite-dotnet-x86-1007200.exe should use program files (x86) directory, and sqlite-dotnet-x64-1007200.exe should use program files directory.
<hr /><i>mistachkin added on 2011-05-20 07:18:59 UTC:</i><br />
What platform are you trying to install on? Are you installing the 32-bit package on a 64-bit platform?
<hr /><i>mistachkin added on 2011-05-20 07:39:28 UTC:</i><br />
Fixed by check-in [7a61aabf34].