LADSPA Plugins aren't showing up within the client

I’m currently running Windows 8 with Audacity v2.1.1, and I’m currently having trouble activating the LADSPA plugins I recently installed. I’ve downloaded them into the plugins folder, and it even shows all of the downloaded effects within the file, however within the actual client itself, they’re nowhere to be found. I’ve tried activating them within the Effect>Manage tab, but they don’t even show up in there either. All it appears to have added is an effect called “Classic Filters”. If anyone could offer input as to why the new effects aren’t showing up I would be most grateful

Which LADSPA plug-ins did you install, and how did you install them?

Plugins must be unzipped, in case that is the issue.