What is happening:
When the Crystal Choir quest was active, I went running about looking for other quests. Talked to Gypsum, he gave me a message for Silicon.
I went to speak to Silicon and gave him a song sheet. But then Silicon refused to talk and finish the Gypsum ares, until the song quest was over...
What should be happening:
NPCs who have quest dialogue to impart should never be completely speechless.
Steps to reproduce the issue:
See decryption above