Pinning Libraries
For those with both SPT V3 and V4 libraries installed, the SPT V4 libraries will be used by default. This is indicated by the * in the Library Manager. It is important to pin the libraries used in your projects to a specific version.
To pin the library version select it in the solution explorer under 'References'.
In the properties window, use the drop down list to set the Resolution to 3.X
Library dependencies will also have to be pinned, if the library is not added and pinned directly. Since SPT Base Types has a reference to SPT Event Logger, it will also need to be pinned. In the Library Manager, select PlaceHolders. Any SPT libraries that are not pinned will be marked with a * in the Library Manager. Pin all SPT libraries to the same version. In this example, we are pinning to 3.9.