USB Composite Device for LPC134x

Hi,

I've created a firmware application for USB composite device in LPC1343, I found an example for this Micro controller which is the composite device is composed of CDC and MSC in AN11018 from nxp for my reference. What I did I've created a composite driver using USB HIDROM and USB MSCROM running in Keil, but unfortunately when i run the firmware it didn't enumerate the device. I used both of the on-chip driver of the LPC1343 for this firmware application. It is possible to combine this two?
I combine the code sample of on-chip driver for HID and MSC into one file but different function on each and call in the main function, but unfortunately it didn't worked. When I checked on the Device Manager, I found a "USB Mass Storage" with a warning sign (exclamation point). I think the device doesn't enumerated
properly.Could someone help me about this?

Thanks.