We are getting an exception error when calculating a specific Drawing Extraction definition. Is there anything we can change or do to allow the process to complete?
There could be a few potential causes for an error such as this, but it may be helpful to first try limiting the extents of the Drawing Extraction volume as follows:
1) In a top view of the 3D model, place a simple rectangular shape around all of the elements to be included in the extraction. 2) From a front or side view, move that shape to the same elevation as the extraction definition's cut plane; the simplest way to do this is to open Drawing Extraction Manager, highlight the extraction definition so that the Cut Plane displays, then move the shape by snapping to that Cut Plane line. Note that you may need to (re)shift the shape from a top view so that it still encompasses the elements.
3) Edit the Extraction definition and from the Region tab switch from Two Points & Direction to By Shape, using the above shape to define the Cut Plane (the Forward View Distance should remain intact).
4) Save the Extraction definition and re-calculate.
In addition, by using the Logging feature a log file will be generated that identifies each element calculated.
Typically the first element that causes the process to fail will be the last one listed. For example, these are the last two lines in a resulting log file:
(File_A.dgn, 4242951, 1111815, 12:56:09, 12:56:09) (File_A.dgn, 4248687, 1117551, 12:56:09,
The third column is Element ID, so by using the keyin "tfanalyze byid 1117551" it will locate that offending element in your DGN file.
For more detail search for the topic "Log Settings dialog" in the delivered Help file.