Hi,
LabVIEW Example Finder uses NI Service Locator in the background. Try to restart the Service Locator and see if that helps. More information on this can be found at the following link.
http://digital.ni.com/public.nsf/websearch/8C00F1144B2CD73E86256DEF00698AC3?OpenDocument
Also, make sure that there is no antivirus or firewall application running in the background when you try to open the example.
Regards,
Ankita A.