Hi Aniket,
Chances are the NI-DAQmx driver was not included with the executable. You can download it from our website here:
NI-DAQmx 8.6.1 For Windows
http://joule.ni.com/nidu/cds/view/p/id/950/lang/en
This is the Windows OS driver. If you are using Linux or Mac, you will need a different version of it located on our Drivers and Updates page:
Drivers and Updates
http://joule.ni.com/nidu/cds/fn/p/lang/en
If this doesn't help your situation, post back with the error you are receiving and we can troubleshoot further.
Regards,
John Bongaarts