This error is due to that an entry in the Registry is missing. This can happen when you have upgraded LabView
The Key "HKEY_LOCAL_MACHINE\SOFTWARE\National Instruments\LabVIEW\CurrentVersion" is either missing or does not have a value.
The solution in this case is to add the Key in the registry and add the Path to the current LabView installation.
Value name = Path
Example of the Value Data: "C:\Program Files\National Instruments\LabVIEW 8.2\"
This will allow the install program to find where to install the FLIR LabView Toolkit.