SHELLEXECUTEINFO sei , access denied - to startup parsm(file)

vc++ studio 2005

I'm using SHELLEXECUTEINFO as I have for years, I'm now getting an error
from the called app "Access to (requested path) was denied";

I've spent way too much time on this now, can one of you kindly gurus help
me out?

The only differance on my machine is that I recently installe "SQL Manager
Express" is that the reason or is there something in my calling method?

this is it.

//---------------------------
Test.exe just takes a directory/path as an arg. and does some stuff!

 SHELLEXECUTEINFO sei;
    ZeroMemory( &sei, sizeof(sei) );
    sei.cbSize = sizeof(sei);
    sei.fMask = SEE_MASK_NOCLOSEPROCESS;
    sei.hwnd = NULL;
    sei.lpVerb = "open";
    sei.lpFile = _T("C:\\Test.exe");
    sei.lpParameters = _T("C:\\Temp");
    sei.lpDirectory = _T("C:\\Temp");
    sei.nShow = SW_SHOWNORMAL;
    //HINSTANCE hInstApp; will fill

    // Optional members
    sei.lpIDList = NULL;
    sei.lpClass = NULL;
    sei.hkeyClass = NULL;
    sei.dwHotKey = NULL;
    sei.hIcon = NULL;
    //HANDLE sei.hProcess; will fill

 TRY
 {
  ShellExecuteEx(&sei);
 }
 CATCH( CFileException, e )
 {
  CString strError;
  strError.Format("%d", e->m_cause);
  CString msg = _T("Could not open application\nError code ");
  msg += strError;
  AfxMessageBox(msg);
 }
 END_CATCH
 //WaitForSingleObject( sei.hProcess, INFINITE );

Thanks