Studio One 4 or Studio One 5 does not show the VocALign Project or VocALign Pro plug-in after installation

On occasion, Studio One Professional software may not recognise newly installed plug-ins.
This procedure will force Studio One Professional to rescan the installed plug-ins.
Please try the following steps:

Windows

1. Exit Studio One Professional software (if it is running)
2. Open a Windows Explorer window
3. In the address bar, type:   %AppData%
4. Open the PreSonus folder
5. Open the Studio One 4 or Studio One 5 folder (as applicable)
6. Open the x64 folder
7. Delete Plugins-en.settings
8. Launch Studio One Professional again

macOS

1. Exit Studio One Professional software (if it is running)
2. switch to the Finder
3. in the Finder, go to the Go menu and choose Go to Folder… 
4. copy this address exactly as it is:   ~/Library/ Application Support/Presonus Software
5. in the Go to the folder: window that will open, paste:   ~/Library/ Application Support/Presonus Software
6. in the Presonus Software folder, open the Studio One 4 or Studio One 5 folder (as appropriate)
7. in the Studio One 4 or Studio One 5 folder, open the x64 folder
8. in the x64 folder, delete Plugins-en.settings
9. Launch Studio One Professional again