Error when generating audio.

Hi all, 

I am experiencing an error when trying to generate text to speech for a slide. I have tried it on a solo project with one simple sentence with no punctuation, and also in my project file with punctuation, neither worked. 

I keep getting an error but there is no explanation for the error, or if I try again then the generating audio bar will fill all the way but my Captivate will be frozen and I have to close it using Task Manager. 

I tried restarting my PC multiple times and using empty projects. Nothing is working. 

Has anyone else had this issue? I need text to speech to complete my project.