I went to the wiki forum to download the ACX check plugin which will download but when I click the tab I get the error box that says there is no associated app to perform this action, install an app or create an association in the default app settings. I have the most recent audacity version on my pc.
ACX Check is a “Nyquist plug-in”. It needs to be installed and enabled. See here for how to do that: https://manual.audacityteam.org/man/installing_effect_generator_and_analyzer_plug_ins_on_windows.html#nyquist_install