Logic не поддерживает VST ;) VST plugins can be hosted in incompatible environments using a translation layer, or shim. For example, FL Studio fundamentally supports only its own internal plugin architecture, but a native "wrapper" plugin exists that can, in turn, load VST plugins, among others. As another example, FXpansion offers a VST to RTAS (Real Time AudioSuite) wrapper (allowing VST plugins to be hosted in the popular Pro Tools digital audio workstation), and a VST to Audio Units wrapper (allowing VST plugins to be hosted in Apple Logic Pro Digital Audio Workstation). http://en.wikipedia.org/wiki/Virtual_Studio_Technology
Vovich, Добро пожаловать на UGEX! :)