Rajeev,Unfortunately, it looks like
you're going to need to wipe all National Instruments software and
registry entries from your computer and start anew. An applications
engineer can take you through this process. Follow this <a href=" http://www.yqcomputer.com/
" target="_blank">link </a>and
create a new service request. NI Support will take you the rest of the
way. Again, thanks for being willing to try all my suggestions.