Error computing model: Non-negative number required. Parameter name: newSize

  Product(s): SewerGEMS, CivilStorm, SewerCAD, StormCAD
  Version(s): 10.00.xx.xx, 08.11.xx.xx
  Environment: N\A
  Area: Modeling

Problem

When computing a model, the following error message is generated:

System.Reflection.TargetInvocationException: Exception has been thrown by the target of an invocation.

Followed by:

System.ArgumentOutOfRangeException: Non-negative number required.
Parameter name: newSize

Solution

Download and install the latest version of the storm and sewer product, using information in this link.

If that doesn't help with the issue, please contact Bentley Technical Support.

Reference # 613652

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