There appears to be another issue with loading the tts-default-config.xml file. You can work around this for now by changing the system.properties to:
org.daisy.pipeline.tts.config=/absolute/path/to/your/DAISY_Pipeline_2.app/Contents/Java/etc/tts-default-config.xml
(make sure there are no spaces in this path)
However, as I said before, I don't think this is the real issue. If you specify your "say.xml" file in the "TTS configuration" option field, like you did the first time, it should work. At least it does for me.
Can you please try it again, either with the workaround above, or by passing the say.xml file (or both, just to be sure)? I'd like to have the job log file and the tts-log.xml file (last time you forgot the latter).
Bert