Ableton Live Fx Presets Missing For User A/c Options

[midiwife]

Dear sentient ones,

I'm running Ableton Live4 on 7 macs at the college where I teach. I installed the updates under my own admin log on.
Now, I'm finding students are unable to access the fx presets within Live 4. They're loggin on as student users (non-admin) if that's a clue.

The odd thing is that the folder in the Live folder that contains the presets resides in the Applications folder, not hidden in part of my user system set up.

I did check the ownership and permissions on the presets folder and it does seem to be 'owned' with Read and Write permissions by me and my admin account. But how do I allow student users to access these in any case without changing the 'ownership' of the folder? I'm not even convinced that they haven't got access to them in the first place.

I did try to change the 'ownership and permissions' of the folder to student and it crashed Live when I started it up from the student log-on!

Any ideas?

midiwife.