HKLM\SOFTWARE\National Instruments\LabVIEW\6.1\Runtime "Exclusive" = DWORD:00000001
Executables built in older versions like 6.1 cannot run in newer versions of the RTE (e.g., LabVIEW 2016 or later). You must use the exact version used for the build. labview runtime engine 61 exclusive
If you are maintaining a system that still relies on LV 6.1 Exclusive, consider these upgrade paths: HKLM\SOFTWARE\National Instruments\LabVIEW\6