Yes stretch.ax is in each folder but 64 bit Sonar refuses to scan them into the plug-in manager list making them unavailable for 64 bit consumption.
But then, Plug-in Manager also gives me double listings of each plugin for X1-3 which makes no sense either.
Current PluginManager.exe is version 23.5.0.32; Created: 12/11/2016; Modified: 6/1/2017.