Magic Earth not working with alternate TTS Engine

I installed an alternate TTS engine (RHVoice), because I didn’t like the robotic sounding speech from eSpeak, and suddenly Magic Earth stopped using TTS. It reverted to pre-recorded directions and no longer states the street names. I also tried another one, Flite TTS Engine. The behavior was the same. Has anyone been able to get it to work with an alternate different TTS engine?

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Working fine here using IVONA.