Autodesk.Civil3DToolkit: 1.1.16.0
Civil 3D: 13.2.2581.0
OS: Microsoft Windows NT 10.0.17763.0
Version: 4.0.30319.42000
Processor: 8
RAM: 31.00GB
[12/15/2020 5:39:07 PM] ERROR: Selected Index is not valid