I'm getting an error message when I try to install Nyquist plugin

Hi there, I’m having trouble installing the Nyquist plugin. I have Audacity 3.1.2 installed and I want to use the software for audio narration. In a course I’m taking, it tells me that I need to install and enable the Nyquist plugin. When I try to do this (Tools–Nyquist Plug-in Installer), it shows me a location on my desktop and an “untitled” file. When I click OK, I get an error message that says “Error.~% Not found or cannot be read”. How can I fix this issue?

Full instructions are in the manual: https://manual.audacityteam.org/man/nyquist_plug_in_installer.html
but basically you get that error message because the “untitled” file is just an example / placeholder. You need to click the “Browse” button and select the actual plug-in “.ny” file that you want to install.