It's actually the same Virtual COM Port project in the mikroE USB Device Library, but with the project settings modified for STM32F429ZI.

The errors I get are unresolved externs in __Lib_USB_Device_STM_M4.c

If you still need the project (mikroC), I've attached it here. Thanks for your help!

Can anyone get USB device library (CDC Class) working on the STM32F429-Discovery board? I tried but ended up with compilation errors.