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When opening WaterCAD for AutoCAD Map I get a message that says, "Length Cannot be less than zero. Parameter name: length".
Note that this problem and solution use WaterCAD as an example, but this could refer to any of the products listed under the 'Applies To:' area.
1) Do a repair on AutoCAD Map. This is done from the AutoCAD Map entry in the Windows Programs and Features window.
2) Delete the WaterCAD for AutoCAD icon on your desktop
3) Try to do a repair of WaterCAD. This is done from the WaterCAD entry in the Windows Programs and Features window.
4) Use the integration option under the Start > All Programs > Bentley WaterCAD to reintegrate and see if that helps out.
5) Try to start the computer In safe mode and see if the program starts there.
6) Please try inserting this file path into the "Target" location for WaterCAD for AutoCAD map icon, which is done by right clicking on the icon and going to Properties:
"C:\Program Files\Autodesk\AutoCAD 2015\acad.exe"/product MAP /language "en-US" /b "C:\Program Files (x86)\Bentley\WaterCAD\x64\WTRC19.scr" /p "WaterCAD V8i"
7) Try another Windows profile. If this helps, try deleting the profile in question and recreate it.