Message
Stair or Ladder is not associated to its AE.
Severity
Crucial.
Detailed Description
A stair or ladder does not have a relation to its active entity (AE).
Possible Cause
Unknown.
Possible Impacts
The resultant object may not be visible in the graphic view. Modification of the resultant object is not possible.
What You Should Do
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Open the model.
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Select the resultant object in the Workspace Explorer.
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Delete the object.