We have received many reports about the DLC corruption issue, and we're confident that this is is false positive in the launcher, and that the DLCs still works in-game. If you've got a save that you could previously load, that you cannot load on the live version of 3.6:
Right click Stellaris, Properties, Local files, Verify Local files.
If the issue persists after verifying your game files, please fill out a bug report here:
https://forum.paradoxplaza.com/forum/forums/stellaris-bug-reports.941/If you're experiencing issues with the game crashing on startup after the update, please
first disable all your mods, then go back, and ensure you've disabled all your mods, and that you're loading the correct playlist.
If the issue persists, (in the launcher) go to Settings, Video, and choo...
Read more