Hello, Thank you for contacting National Instruments.
I may have found a knowledge base entry that accurately addresses your problem. Following these instructions will, hopefully, resolve your Dll problem. To access the knowledge base entry, please do the following: 1) Go to http://www.ni.com 2) Scroll down and click [KnowledgeBase] under "Technical Support" 3) Click [Search all entries] 4) Search for "daq rundll" 5) Click the first link "Partially Complete NI-DAQ 6.1 Installation Gives Error about a Missing RUNDLL" 6) Follow the on-screen instructions I hope this helps. Please feel free to notify me if you need more assistance. Have a great day! Kind Regards, Joe Des Rosier National Instruments