Comment (by Roland Haas):

Pull request is here: https://bitbucket.org/simfactory/simfactory2/pull-requests/59/rhaas-bytestreams

Tested with this invalid byte stream:

echo "utf 8 test"
printf '\xc3\x28\n'
exit 0

in a RunScript file.

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Ticket URL: https://bitbucket.org/einsteintoolkit/tickets/issues/2544/utf-8-decode-failure-when-using-create-run