I would search your computer for the plug in--use the Finder, and Spotlight; and if you have time constraints on you now, Id install it again, following the directions below, exactly, and then search for the first one again later:
http://www.sibelius.com/download/plugins/index.html?help=install
"Mac:
Sibelius 4.x, 5.x and 6.x:
In the Finder, choose Go > Go To Folder and type ~/Library/Application Support, then click Go.
If there is a folder called Sibelius Software in this location, double-click it to go inside it; if not, create one (choose File > New Folder), then go inside it.
You should see a folder called Sibelius 4, Sibelius 5 or Sibelius 6: if so, double-click it to go inside it; if not, create one, then go inside it.
If there is a folder called Plugins in this folder, double-click it to go inside it; if not, create one, then go inside it.
Now create a folder to install your new plug-in into. If you want the plug-in to appear in one of the existing sub-menus in the Plug-ins menu in Sibelius, be sure to create a folder with the exact same name as the sub-menu itself. Otherwise, create a folder called anything you like: this will appear as a new sub-menu in Sibelius when you next run it.
Copy the plug-in you downloaded into your chosen folder"
Apparently something didnt go quite right with your first installation--please try again.
Thanks Bob
--
Bob Morabito
Sib 5.2.5, 6.2, 7.1.3. 7.5.1
Mac OS 10.9.3 iMac 32GB RAM, 1 TB SSD |