Error when validating model in Storm-Sewer products: Object reference not set to an instance of an object.

  Product(s): SewerGEMS, CivilStorm, StormCAD, SewerCAD
  Version(s): CONNECT Edition, V8i
  Area: Output and Reporting


When validating, the following error message is displayed:

"Object reference not set to an instance of an object"


This is a generic error that data that is typically a result of data that is missing or outside of an acceptable range.

First, try compacting the database. In CONNECT Edition, go to File > Database Utilities > Compact Database. In V8i, go to Tools > Database Utilities > Compact Database. Once you select the database file, choose the option to purge the model to save space. 

For one instance of this, a catch basin's gutter shape was set to <None>. Assigning this attribute resolved the issue.

  Original Author: Craig Calvin