"It has come to light that the new AutoCAD 2010 file format is not compatible with the Lifespan SBEM gDi program. As a temporary work around AutoCAD 2010 files may be converted to the 2007 format to enable compatibility. This may be performed using the free program DWG Trueview provided by AutoCAD, available at: http://usa.autodesk.com/adsk/servlet/pc/index?id=6703438&siteID=123112 We seek to enable compatibility in the near future.