I can not load VST version of plugin made by Plugin Alliance.
It is recognized by PluginManager, but it does not appear in the Install list.
Only the VST 3 version appears on the list.
And the display of VST ...
Studio One 3 and again I can't get the plugins to show in the list.
However, I've tested with MUX, which has an option to manually browse for plugin DLLs, and that way I am able to load ...