You Open the .STU file and get the error message 'Error when opening the project file'.
This error happens, if in the NOM configuration the communication type 'DIO Bus' is marked, but no DIO drops are configured. The problem is fixed with UnityPro V4.1. In older UnityPro versions you should avoid a marked 'DIO Bus' without DIO drops configured.
Legacy KB System (APS) Data: RESL193195 V1.0, Originally authored by KlSP on 11/20/2008, Last Edited by KlSP on 11/20/2008
Related ranges: Unity Pro