Where on my computer is Reason looking for VST plugins?

By default, Reason 9.5/10 and Reason Essentials 9.5/10 look for installed VST (2.4, 64-bit) plugins in the following locations: Under Windows: C:\Program Files\VSTplugins C:\Program Files\Steinberg\VSTplugins C:\Program Files\Common Files\Steinberg\VST2 Under Mac OS: Library/Audio/Plug-ins/VST ~/Library/Audio/Plug-ins/VST It's also possible to add your own custom locations to the "search list" if you like. You can do that on the Advanced tab in Preferences.