Installer creates system directory but only assigns one user with read access
During install, the user is prompted multiple times for their credentials. It may ask for another user's password, which has admin rights. The result is that it creates a new system Library folder (apparently it did not exist on my system), and then installs the dictionary files inside the system Library folder. The problem is that it assigns only the other user with read access. I manually had to add my current user account to the folder and enclosed files. Although, if this is a system folder, it should be read-accessible by every system user.
@fatmarker It prompts for admin credentials when you trying installing?
Unfortunately, I don't have a Mac anymore, so I can't test or maintain this anymore. Maybe someone else here can help.