font managing in a limited account

Hi
Maybe some of you poeple could help me out with this issue.
I have a problem with a font manager ('The Font Thing') working in a limited account.

I had been able to work with it previously, by setting Windows/fonts folder permission to Full Control to Everyone or to Users (can't recall exactly).

But recently i've turned Simple File Sharing on for some reason.

When i tried to return to previous state, i couldn't see installed fonts in the font manager anymore, with its message "Failed to set data for ".
I tried to give Full Control to Everyone, Users, Power Users, System, Creator owner, Admins - on fonts folder (in Windows) to no avail.

How come it worked previously and now it doesn't?

Any ideas?

Thanks

 

It is very old app (although i had similar problems when tried other newer font managers), without real support site available.
But you gave me an idea to send mail to its creator. I did it, and now am waiting for response.

Thanks

Any other suggestions are welcome.