For a little background, we are a Civil Engineering firm that does residential site design. We have always created seperate drawing files for the paving, sanitary sewer, storm sewer, grading, ect. So with AutoCAD Civil 3D 2009 that we have just recently switch over to from Land Desktop 2007 we are having to data reference in our pipe networks, alignments, and profiles, but it is not allowing us to cross reference any of the pipe networks, alignments, or profiles.
For example, in the storm sewer drawing we have data referenced in the sanitary sewer pipe network, shown our crossings and all, then we check the drawing back into vault, everything working fine so far. Now we go into the sanitary sewer drawing and data reference in the storm sewer pipe network and try to check this dwg back into vault. This is where we get a dialoge box that says circular reference error and this goes straight to FATAL ERROR! We have tried many things but still the same fatal error. Does anyone know what is causing this or how it can be fixed. Thanks.


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