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Are you using the XVAnalogFilter included in the .zip or an old version.
The older version if xvanaloguefilter has the wrong name, so ensure to use the new one included in the zip.
Also have you tried using the camelcrusher vst to check externals are working?
There is no external button or app now, so everything should just work. You may nee to use pull in send template mode however.