Do not select non TTS voices such as:
Voice_Eng-uk-f3-lua.zip
Voice_Eng-uk-m2-lua.zip
Voice_Eng-us-m1-lua.zip
You can remove them from the voice directory.
It looks like the TTS engine you are using only works with a particular TTS voice and that voice doesn't have configuration for TTS Pro. I'm using VocalizerEx and Google voice and they works with the voice I told you to use.
Update: I think your sys.txt file is overriding TTS Pro setting used in the voice file. Use this sys.txt instead
Spoiler: .
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