CCS/TM4C1292NCZAD: usb_dev_msc builds but alway give dev_disconnected

Tool/software: Code Composer Studio

I have the TM4C129X demo board the SD card example works great. However, when I run the usb_dev_msc example it shows status "disconnected" both counters = 0.
The jumper are seems to be set correctly. The "USBDMSCEventCallback" never gets called the structures with the callback is being passed:

USBDMSCInit(0, (tUSBDMSCDevice*)&g_sMSCDevice);

What am I missing?

Thanks 

Rob