Hmmm. Think I'm missing something. Downloaded the installer (which is shockingly small) and ran it, and then told it to Launch, but it just opened my C: drive. If I manually launch PP, it shows Festering Skies still as "coming.".
1. Yes, the "Launch" button from the DLC installer just opens the Windows explorer.
2. I have uninstalled the game completely, then installed the latest version (1.11), then added the DLC, and then I had the starting screen with all the DLC available. I have clicked on "Festering Skies" and activated it.
3. Now the game is working.
4. I don't use Galaxy.