You may encounter random issues if attempting to run SELECTseries 1 legacy Building applications Bentley Architecture, Structural Modeler and Bentley Building Mechanical Systems on top of MicroStation SELECTseries3, such as errors when opening DGN files, hangs or crashes when using the DataGroup Catalog or Definition Editors, and crashes when working with Clip Volumes/DVs.

These legacy SELECTseries1 Building applications are not compatible with MicroStation SELECTseries3, and instead should be used with MicroStation SELECTseries2, build 08.11.07.443.  The same product functionality found in these legacy applications is available in SELECTseries3 (or later) via AECOsim Building Designer, which is a single application covering all four disciplines: Architectural, Structural, Mechanical and Electrical.  A shortcut providing only the base MicroStation toolset is also included should you need to work in this manner without having MicroStation SELECTseries3 installed.