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HI I have used NI ELVIS Express vi function in my vi like variable power supply or DMM then because of a problem I had to uninstall windows. Now I have installed LavVIEW 2011 and Elvismx 4.2.3 but when I open my previous vi LabVIEW can't find the ELVIS express VIs and I get message like subVPSupdate.vi or subVPSconfigure are not available. Would u please let me know how can I have access to these express VIs again. Many thanks