Interestingly, Lee, I used a digital TTS wav file from a website. It plays well in other apps, but it was not working in GG Max. I also noticed the TTS built in (great feature, BTW) was spotty, in that it would be available in some characters, but not all. Thanks for the reply, btw.
Acer Nitro 5
2.4 GHz Core i5
GeForce GTX1050
32Mb SDRAM