This behavior is due to the differences in the .NET Framework that different versions of LabVIEW use. LabVIEW 2012 can use up to .NET Framework 3.5, and the RAD Utility 16.0 uses .NET Framework 4.6.1. When the RAD Utility is installed, it installs .NET Framework 4.6.1.
In order to get around this, you can do one of the following steps:
1. Remove and reinstall the Microsoft .NET Framework to a version compatible with LabVIEW 2012
2. Use VIs from the fileVersionInfo.llb
which is located at the following location:
C:\Program Files (x86)\National Instruments\LabVIEW 2012\vi.lib\Platform\fileVersionInfo.llb