XC32++ USB CDC USER_USB_CALLBACK_EVENT_HANDLER Problems (Mauricio Sierra)

Hello Microchip developers, I have some problem trying to implement USB CDC Demo with XC32++, because the compiler show me the next error:build/PIC32MX795F512L/production/usb_device.o: In function `_USB1Interrupt':
c:/users/mauricio sierra/documents/..