Please also see the related issue.
asadmin asks the DAS to use the PropsFileActionReporter to report the command status. PropsFileActionReporter does not correctly handle certain strings when passed to setMessage if parts of the string are formatted in the same way as a manifest attribute: new line, attr-name: attr-value
The related issue shows an example in which the apparent attribute name is invalid, so asadmin's attempt to interpret the entire action report as a manifest fails.
PropsFileActionReporter should be changed so it can handle such strings and/or asadmin should use some other type of action reporter implementation that can handle such strings.