I set this up on my machine as an obey file and tested it, it works as expected. Transferred to her machine and it doesn't work. (Obey and test/png were in the same dir).
That is an interesting result.
-- David Pilling email: david@xxxxxxxxxxxxxxxxxxx web: http://www.davidpilling.net post: David Pilling P.O. Box 22 Thornton Cleveleys Blackpool. FY5 1LR UK fax: +44(0)870-0520-941