Terrain Generation Problem

I'm working on a quick terrain demo for a side project and am having an issue with generating the flat terrain tri grid. I've checked both the vertex values and index values, ensuring that it is properly placed and wound in a clockwise fashion, but nothing seems to be rendering.

Generate Code

void Generate(IDirect3DDevice9* pDevice, int cellsWide, int cellsHigh, float xStep, float zStep)	{		numVertsX = cellsWide + 1;		numVertsZ = cellsHigh + 1;		pDevice->CreateVertexBuffer(numVertsX * numVertsZ * sizeof(sCUSTOMVERTEX),									D3DUSAGE_WRITEONLY,									D3DFVF_CUSTOMVERTEX,									D3DPOOL_MANAGED,									&m_pVertexBuffer,									NULL);		pDevice->CreateIndexBuffer(cellsWide * 2 * cellsHigh * 3 * sizeof(WORD),								   D3DUSAGE_WRITEONLY,								   D3DFMT_INDEX16,								   D3DPOOL_MANAGED,								   &m_pIndexBuffer,								   NULL);			sCUSTOMVERTEX* vertices = 0;		D3DXVECTOR3 minBound = D3DXVECTOR3(cellsWide * xStep * -0.5f, 0.0f, cellsHigh * zStep * -0.5f);		m_pVertexBuffer->Lock(0,0,(void**)&vertices,0);		D3DXVECTOR3 pos(minBound.x, 0.0f, minBound.z);		int count = 0;				//generate vertices		for(unsigned z = 0; z < numVertsZ; ++z)		{			pos.x = minBound.x;						for(unsigned x = 0; x < numVertsX; ++x)			{				vertices[count].pos = pos;				pos.x += xStep;				++count;			}			pos.z += zStep;		}		m_pVertexBuffer->Unlock();		//generate indices		count = 0;		int vIndex = 0;		WORD* indices = 0;		m_pIndexBuffer->Lock(0,0,(void**)&indices,0);		for(int z = 0; z < cellsHigh; ++z)		{			for(int x = 0; x < cellsWide; ++x)			{				//first triangle				indices[count++] = vIndex;				indices[count++] = vIndex + numVertsX;				indices[count++] = vIndex + numVertsX + 1;				//second triangle				indices[count++] = vIndex;				indices[count++] = vIndex + numVertsX + 1;				indices[count++] = vIndex + 1;				++vIndex;			}			++vIndex;		}		m_pIndexBuffer->Unlock();	}

Render code

bool CDirectX::Render(){	// Error check	if( !m_pD3DDevice)		return false;	// Clear the screen	m_pD3DDevice->Clear(0, NULL, D3DCLEAR_TARGET | D3DCLEAR_ZBUFFER, D3DCOLOR_XRGB(0, 0, 150), 1.0f, 0);	// Draw other things here	//create transform matrices and set to identity	D3DXMATRIX	worldMat;		D3DXMATRIX	transMat;		D3DXMATRIX	scaleMat;		D3DXMATRIX	rotMat;	D3DXMatrixIdentity(&worldMat);	D3DXMatrixIdentity(&transMat);	D3DXMatrixIdentity(&scaleMat);	D3DXMatrixIdentity(&rotMat);	if(SUCCEEDED(m_pD3DDevice->BeginScene()))	{						m_pD3DDevice->SetFVF(D3DFVF_CUSTOMVERTEX);										//set FVF			m_pD3DDevice->SetTransform(D3DTS_WORLD, &worldMat);			D3DXMatrixScaling(&scaleMat, 1.0f, 1.0f, 1.0f);				//set scale		D3DXMatrixRotationYawPitchRoll(&rotMat, timeGetTime() / 1000.0f, timeGetTime() / 1000.0f, timeGetTime() / 1000.0f);	//set rotation		D3DXMatrixTranslation(&transMat, 0.0f, 0.0f, 0.0f);			//set translation		D3DXMatrixMultiply(&scaleMat, &rotMat, &scaleMat);	// Overwrite scale w/ result		D3DXMatrixMultiply(&worldMat, &scaleMat, &transMat); // world = rot*scale*trans		m_pD3DDevice->SetTransform(D3DTS_WORLD, &worldMat);				m_pD3DDevice->SetIndices(terrain.m_pIndexBuffer);		m_pD3DDevice->DrawIndexedPrimitive(D3DPT_TRIANGLELIST, 0, 0, terrain.numVertsX * terrain.numVertsZ, 0, (terrain.numVertsX - 1) * (terrain.numVertsZ - 1) * 2);			m_pD3DDevice->EndScene();	}	// Display backbuffer	m_pD3DDevice->Present(NULL, NULL, NULL, NULL);	return true;}

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