Effects don't work [SOLVED]

I have just downloaded Audacity but for one reason, all the effects, dont work, they show up but i can’t click on it.
i looked in the plugins folder to look if i had .Ny files in it and it does, so that isn’t the problem.
(the letters from all the effects are grey instead of black, i have tried deleting the files in the plugins (and also the nyquist folder) but that didn’t work too.
Who could help me?

Greetz cas

Most actions (including effects) are disabled during playback and paused playback. Try clicking on the Stop button so that playback is stopped and not just paused, then try the effects again.

Thanks Steve! It works now