Hooking d3d9 & Create NvIFR object but get a -17

I tried to hook the d3d9:createdevice API and create a NvIFR object in it. But in the NvIFRlib.create(), the API NvIFR_CreateEx_fn() always return -17. But -17 is not defined in NVIFRRESULT. What does it mean? Any ideas? Thanks a lot.

DllExport HRESULT __stdcall
IDirect3DDevice9 * This,
UINT Adapter,
D3DDEVTYPE DeviceType,
HWND hFocusWindow,
DWORD BehaviorFlags,
D3DPRESENT_PARAMETERS *pPresentationParameters,
LPDIRECT3DDEVICE9 *ppReturnedDeviceInterface
static int createdevice_hooked = 0;
HRESULT hr = pD3D9CreateDevice(This, Adapter, DeviceType, hFocusWindow, BehaviorFlags, pPresentationParameters, ppReturnedDeviceInterface);

if(createdevice_hooked > 0)
	return hr;

	return hr;

//! Turn off culling
(*ppReturnedDeviceInterface)->SetRenderState( D3DRS_CULLMODE, D3DCULL_NONE );

//! Turn off D3D lighting
(*ppReturnedDeviceInterface)->SetRenderState( D3DRS_LIGHTING, FALSE );

//! Turn on the zbuffer
(*ppReturnedDeviceInterface)->SetRenderState( D3DRS_ZENABLE, TRUE );

NvIFRLibrary NvIFRlib;

//! Load the NvIFR.dll library
if(NULL == (g_hNvIFRDll = NvIFRlib.load()))
    ga_error("Unable to load the NvIFR library\r\n");

g_pIFRtest = (NvIFRToSys *)NvIFRlib.create(*ppReturnedDeviceInterface, NVIFR_TOSYS);
if (!g_pIFRtest)
    ga_error( "Failed to create the NvIFRToSys Interface\r\n");