Do you see the file Macintosh HD/Library/Audio/Plug-Ins/Components/Pendulate.component? If not, try running the installer again.
If you do see it, try logging off your system and logging back in. There's a bug in Logic that keeps it from seeing new plug-ins unless you're logged out and logged back in. There's a work-around for the bug in the installer, but it doesn't always work. It would be nice if Apple would fix this bug.
Finally, make sure you're looking under Newfangled Audio rather than Eventide so you can find it in the appropriate folder.