Fsharp: .NET Framework ---> .NET Standard assembly reference results in error in error list

Created on 29 Jan 2018 · 14Comments · Source: dotnet/fsharp

Using 15.6 Preview 3

Create a .NET Framework 4.6.1 library.
Create a .NET Standard 2.0 library.
Add a reference from the .NET Framework library to the .NET Standard library.
Build.

Result:

FS0084 Assembly reference 'C:\Users\Phillip Carter\source\repos\Library9\ClassLibrary1\bin\Debug\netstandard2.0\ClassLibrary1.dll' was not found or is invalid

Some other things to note:

The project can build and run
If you close the solution and reload it, things seem fine

cc @TIHan

Area-IDE Language Service Resolution-Wont Fix Severity-Medium bug

Source

cartermp

Most helpful comment

I watched that entire video from beginning to the end. 3 1/2 minutes of my life I won't get back.

KevinRansom on 29 Jan 2018

😄2

All 14 comments

It started magically working after I got halfway through this video.

cartermp on 29 Jan 2018

😄1

Did this again with a Console app and .NET Standard library; still seeing the same error:

cartermp on 29 Jan 2018

I watched that entire video from beginning to the end. 3 1/2 minutes of my life I won't get back.

KevinRansom on 29 Jan 2018

😄2

Confirming that I still see this _without_ anything custom installed into my VS

cartermp on 29 Jan 2018

Upon closing and re-opening the solution, the error in error list is not gone. Updating issue

cartermp on 29 Jan 2018

@cartermp it just worked fine for me. Is there some steps, perhaps you missed from the repro?

KevinRansom on 29 Jan 2018

Nope.

cartermp on 29 Jan 2018

Next time you are in the office, can you bring in your laptop and show me pls.

KevinRansom on 29 Jan 2018

Just got this now on a fresh .NET Framework console app referencing a fresh .NET Standard library:

This is on my desktop. I don't have a Windows laptop.

cartermp on 29 Jan 2018

@cartermp could you please:

set the logging to verbose in tools options/projects and solutions/build and run.
do a build and mail me the logfile, I will take a look.

KevinRansom on 29 Jan 2018

Still reproduces in 15.8. Manually reloading the .NET Framework project is required.

cartermp on 29 Aug 2018

Fixed by #5698

cartermp on 25 Sep 2018

Reopening as we need to slightly revert cross project referencing of CPS style projects in a legacy project; it causes worse issues such as tooling not working when you open a second solution.