user admin can't modify permissions in folders

[Javier Garcia]

Hello, i'm using Plesk 9.0.1 in windows 2003 server

i detected that if i access to plesk with admin account and i go to some domain and file manager and i try to modify permissions i obtain one error that says that the user does'nt have permissions to change the permissions, but i'm the admin...

My users can't modify the permissions and i can't modify the permissions...

anymore with this issue? any help are apreciated... thanks