A change to the Easy Fill application NX12 v3 requires that the NX Pre/Post application be installed.
The EasyFillAdvancedNX12_data_v3_README states:
Please check whether "simulation pre/post application" has been installed.
The NX CAE mesh API will be called in Easy Fill NX12 v3, so users should make sure "simulation pre/post application" has been installed. Users can check whether they have this application installed as following picture. Please note: user should have this application installed, but they needn't have this license.
OS Version: n/a