Audacity Effects can't enable DeEsser

I installed Waves DeBreather into Audacity PlugIns a couple weeks ago and it enabled in Audacity with no problem and works fine. But I tried the same thing with Waves DeEsser later and when I try to enable it, Audacity says that it can’t register the program. I notice that the two programs have different extensions, even though I put them both in Audacity Plugins and I wonder if that is where the problem lies. The DeBreather is C:\Program Files (x86)\VSTPlugIns\WaveShell1-VST10.0dll12691789 and the DeEsser is C:\Program Files (x86)\VSTPlugins\DeEsser.bundle\Contents\Win32\DeEsser.dll and there is another one for Win64. Shouldn’t they have the same extensions except for their names? Anyway, please help. Thx!

VST Plugins are often available in two varieties : 32-bit & 64-bit.
Currently Audacity only accepts 32-bit plugins, even if you have a 64-bit operating system.

Then why doesn’t Audacity enable (“register”) the DeEsser Win 32 plugin? Thx

Several of the Waves VST effects are incompatible with Audacity.
Supported host applications are listed on the Waves website: