Greetings,
Our web page is an excellent source for product support and troubleshooting. Simply go to http://www.ni.com and type "+error +1406" in the search box. You will find a number of Knowledge Base articles relating to this issue. I have even linked one below that may be of help.
Error 1406 When Running the Installer of an NI Product
http://digital.ni.com/public.nsf/websearch/8782C8C20850101786256AB60074577A?OpenDocument
Regards,
Justin Britten
Applications Engineer
National Instruments