The error is simple. I've seen that many time: Code: YAML_PARSE_ERR_NO_FINAL_NEWLINE

Just put an extra newline at the end of your YAML file, like this:

####################################
---
myfile:
  - you: have to
    put: a newline character as the last line of this file

####################################
[download]

Of course without the #s!

Also, if your YAML file is empty, like moritz mentioned, that is wrong too!!