Kevin, would it help to install any of this stuff,running as administrator?
At 05:34 PM 9/27/2019, Kevin Cussick via Groups.Io, wrote:

Ok,   well can't really help you.   how ever I had the addon throw up an error but rebooted the machine and it fixed it and now it just works. that is why I asked if you had any error installing the addon.

On 27/09/2019 21:48, Richard Wells wrote:

Add-ons installed without errors.
On 9/27/2019 3:47 PM, Kevin Cussick via Groups.Io wrote:

did addons install OK? if so then I do not know why it is not working
for you.

On 27/09/2019 21:45, Richard Wells wrote:

I have installed the English language pack and four voices, but after
restarting NVDA the RH Voices just do not show under change synthesizer.

On 9/27/2019 2:45 PM, Kevin Cussick via Groups.Io wrote:

Hi,   I don't think so.   OK you downloaded the addon,   the voices
you might want to use,   install the addon first,   do not reboot nvda
yet, Â install all voices you might use then restart nvda and you
should see the sinth under the sinth settings page select Rh Voice as
the sinth then select the voice if it doesn't show up I do not know
why. using alpha and stable as well and the addon and voices work.

On 26/09/2019 23:34, Richard Wells wrote:

I tried this using the English add-on and the three offered English
voices. They installed, but they do not show in the change synthesizer
dialog under settings/speech. Did I miss a step somewhere?

                John