C3D sample .Net project issue

[karl.sch1983]

I am trying to build a sample VB project provided with C3D 2025 (C:\Program Files\Autodesk\AutoCAD 2025\C3D\Sample\Civil 3D API\DotNet\VB.NET\AlignmentSample). As soon as I open the sample project, there is a message in VS

Upon opening configuration manager everything seems OK.

So I am not sure what that message implies. Does anyone have any idea? I simply closed the configuration manager without changing anything.

Next, I tried to 'upgrade'. On the screen 'Which is your preferred target framework?' VS2022 it shows '.Net9.0 Preview' This to me meant it was already targeting .Net core but I am no expert. Has anyone seen this?

I am thinking maybe the project is already targeting .Net 8.0. Moving on. I simply try to build it and there are no errors but also no build. Output simply says 'Skipped'? I notice that there is a blue exclamation mark on the sample project. Hovering over it shows this message

I suspect this is the culprit but have no clue how to fix it. I am building a Debug version 'x64' platform. Also tried release version 'x64'. Nothing works. Can someone please point me in the right direction. I have spent 2 days on this but getting nowhere. Any help is greatly appreciated. Thanks everyone.

[Jeff_M · Accepted solution]

The Configuration issue is due to they did not completely remove the AnyCPU configuration. Remove it from the Solution configuration by selecting <Edit> then Remove, be sure to check the box to also remove from any projects using it. This should solve the message issue at startup as well as the build issue.

[karl.sch1983]

Thanks @Jeff_M . That was it. Really appreciate your time.