Doing anything results in "unexpected document type"

[Hund]

I'm running Arch Linux with bti 034. I installed the package bti-git from the AUR.

$ bti
tweet: Test
unexpected document type
operation failed
$ bti --action friends
unexpected document type
unexpected document type
operation failed

My ~/bti:

account=<username>
password=<password>
host=quitter.se

Am I doing something wrong?