VCOM on USB for NXP LPC18xx device

Hi,

I am working with a board that uses an NXP LPC1837 and want to get the USB VCOM port working.

I downloaded the example (RTOSTutorial_Ex10A-LPC18xx) for the LPC1857 and modified it to match my hardware. ( took out the graphics controller, changed the USART from 3 to 0. Pulled USB1 from the run time environment. Removed SPI. Changed the CPU to LPC1837. Updated the pinouts in RTE_Device.h... I am not using PPWR, PWR_FAULT, and INDI1 on this USB port. )

It compiles and downloads OK.
The calls to USBD_Initialize() and USBD_Connect() return usbOK.

However when I plug into a Windows 7 or Windows 10 PC nothing happens in device manager. Even if I have the driver wrong I should see something happen when I attach the board. I did go ahead and install the VCOM driver that was included with the example.

Anyway, I am using the same 12MHz crystal as on the demo board and the USB0 is pretty vanilla. Not much to customize.

I know my hardware works as I can install and run a Mass storage device demo that NXP makes available for USB0 on this part.

So I am not sure where to look next... is there an update to the VCOM example for this part? Did I forget something. I am using uVision 7.20.0.0. I have read most of the literature on CDC ATM and the example program... will spend the rest of today looking for something that I may have missed.

Thanks