Solution
To use your current version of LabVIEW with the LabVIEW Real-Time and LabVIEW FPGA modules, you need to install those that correspond to the year you are using. If you upgrade to a newer version of one software, you must also upgrade to the corresponding versions of the others.
For example: For LabVIEW 2018 you need LabVIEW Real-Time 2018, and LabVIEW FPGA 2018.