Multiple Webcam Initialization Failure In videoInput (DShow based) Library

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C++

Hi guys,
Am developing a project using OPENCV with webcam support for my final year project...
videoInput is found in

http://muonics.net/school/spring05/videoInput/

My code consists of the following lines ...

videoInput VI;
VI.setupDevice(0); 
VI.setupDevice(1); 		

after cam - 0 sets up,

SETUP: Setting up device 0
SETUP: Frontech E-cam
SETUP: Couldn't find preview pin using SmartTee
SETUP: Capture callback set
SETUP: Device is setup and ready to capture

Cam-1 starts Setting up

SETUP: Setting up device 1
SETUP: Frontech E-cam
SETUP: Couldn't find preview pin using SmartTee
SETUP: Capture callback set
ERROR: Could not start graph

ANd fails by the following errors ..

SETUP: Disconnecting device 1
SETUP: freeing Grabber Callback
Error - Could not pause pControl
SETUP: freeing Renderer
SETUP: freeing Capture Source
SETUP: freeing Grabber Filter
SETUP: freeing Grabber
SETUP: freeing Control
SETUP: freeing Media Type
SETUP: removing filter USB Video Device...
SETUP: filter removed USB Video Device
SETUP: freeing Capture Graph
SETUP: freeing Main Graph
SETUP: Device 1 disconnected and freed

Could Someone throw light on the prob. or any configuration of videoInput so that I over come this problem....

Thanks in Advance...