Picking Up the Pieces should be working now.

What items did you have in your quest inventory and what quests are active?

I am receiving the same error messages. I don't know what is happening, but hopefully it will be fixed soon. Like you said, it turns out only the American server has this issue.

Pegasus

Try deleting C:\Users\username\AppData\LocalLow\LoE with 'username' being your username and then restart the game.

Only other quest I have active is the "Picking Up the Pieces", which I'm also stuck with. Based on the wiki, I've completed everything else besides the ones I'm stuck with and "So You Think You're Ready".

You paid him for the cookies. As far as he is concerned, the quest is ended. You will not receive a reward because you didn't do all the work figuring out the issue.

This issue has been resolved. Closing this up.

What types are your ponies? Earth, Unicorn, or Pegasus?

Nevermind. We found a script problem. A fix has been implemented. Closing this up.

Script has been updated to resolve problem. Thanks for helping!

Do you have the Winter Warm Up quest active? That dialogue is for Winter Warm Up.

What other quests do you have active or completed?

Did you have any other quests active or completed at the time?

update: actually i think its a bug on the pony, cuz i tried creating other ponies and i could complete the quest on them.

Dialogue updated. Closing this up.

No response back. Closing this up.

Do you still have music sheets in your inventory? The option to ask about the rehearsal only works if you still have sheet music in your inventory.

FIXED: Go into your library folder and double click on Application support. Find "unity.LoE.Legends of Equestria" and double click it. Delete the data folder and relaunch LoE. That should fix it.

Can confirm this is happening, however I haven't been getting crashes as much as I tried to force it on testing it. The collision is only gone for a few seconds after finish loading into a room, but it enough time to go through or in the library building.