Conversation so far:
When did Tori Amos sign with Epic Records?
With her Atlantic contract fulfilled after a 15-year stint, Amos signed to Epic in late 2001.
What was Tori Amos's first album released at Epic Records?
In October 2002, Amos released Scarlet's Walk, another concept album.
What was a single off Tori Amos's album Scarlet's Walk?
The first single from the album was the track A Sorta Fairytale.
Did Tori Amos's album Scarlet's Walk perform well?
The album debuted at number 7 in the US, selling 107,000 copies in its first week, and reaching RIAA Gold status about a month after its release.
Who wrote on Tori Amos albums?
Tori Amos wrote her albums.
Did Tori Amos have any problems at Epic Records?
She had negotiated an end to her contract with the record label, and would be operating independently of major record labels on future work.

Question: What caused the problems?
Self-contained rewrite: What caused Tori Amos to negotiate an end to her contract with Epic Records?