At first glance, your YAML appears incorrectly
formatted. The - order lines should be
indented two spaces. I'm also dubious about your having
two item: fields under - order. Do you know that those are hash keys, and that the second will tend to clobber the first?
in reply to YAML::TINY and module install test
I wonder if you've read sufficiently about the modules you are using. Perhaps you need to try going from perl data structures to YAML, to see what the formatting should be.
I would try the following (possibly valid) YAML:
UPDATE: YAML should end with '...'
- order: wb090130
- order: wb090131