Issue:
When I ran the irrigation analysis for the first time, I'm getting installation errors as shown below:
Solution
The Irrigation Analysis requires .NET Framework 3.5 to run. See the steps below:
1. Download and install Microsoft .NET Framework 3.5
Windows XP and lower: https://www.microsoft.com/en-in/download/details.aspx?id=21
Windows 7 x86: https://www.microsoft.com/en-us/download/details.aspx?id=5726
Windows 7 x64: https://www.microsoft.com/en-us/download/details.aspx?id=7942
Windows 10: Skip to Step 2.
2. Turn ON the Windows Feature for .NET Framework 3.5. Go to the Control Panel > Programs > Turn Windows Features On or Off > (see below)
3. Find OptiSurface Designer launcher on your desktop (OSDesigner.exe) and run as Administrator.
4. Run Irrigation Analysis again.