What are Wizard Files? Many FREE plugins only require a VST format .dll file. This is fine for many installations. Other plugins are much more detailed and require additional supporting files such as samples, Windows registry entries, preset files, etc.
The VFX Application only knows how to install these more detailed plugins via a plugin information wizard file (vfxinfo.txt). Each plugin information wizard file provides information to the V-Machine such as what files to transfer during synchronisation to the V-Machine.