I have installed and reinstalled the base pack several times and it has no issue loading into the game. I then attempt to install the freighter expansion and it runs through the installer to when it says that the expansion requires base pack. After this, the only prompt is next. When you hit next, It just says that it was not installed at and nothing else. I have tried every other item on the forum and it will not help. I also attempted to do the update it keeps pulling up the page for me to do but that is for P3Dv4 only.