DolphinaMoon Did you check if you can buy them on the mail box ? Did you remove MCCC and test without it too ?
I will see if I can buy them, yes as soon as it happened I uninstalled MCCC. And tried 3 more time. I know that when things don't work you turn off mods. That's always the first thing you should try.
I'm having the exact same problem as you, keeps saying I've got the museum shard in my inventory but I don't. I made an entire new base game save with mods off and deleted the accountdataDB package but it still got stuck on that part of the event. Did you ever find a workaround?
DolphinaMoon Idk if you figured it out or even still care, but I got the event to work by turning off my wifi and playing offline. I don't know how to replicate the fix exactly, and I had to redo the majority of the event once when the game glitched and ate my progress, but I was able to complete the event and got everything
