Visual Studio 2017 namespace cannot be found on installed package

I’ve installed the FileHelpers package using the package manager console in Visual Studio 2017 and when I start Unity I get the error message “The type or namespace name `FileHelpers’ could not be found. Are you missing an assembly reference?”.

I am using .NET 4.6.

Any help would be appreciated.

Make sure that you have the latest visual studio 2017 version as I have read in the release notes that they fixed this bug already.