CVI doesn't install the DAQ library since the DAQ library files change with each version of the NI-DAQ driver software. You need to re-run NI-DAQ setup. You can run it from Start->Programs->National Instruments->NI-DAQ->NI-DAQ Setup. Then re-install the NI-DAQ for CVI files. If that doesn't work (it should work), then uninstall and re-install NI-DAQ.
Best Regards,
Chris Matthews
National Instruments