Im testing the template in a local (WAMP with XAMPP) and server (LAMP hosted) side, i find the same problem, i cant modify the params (save or apply)
joomla -> 1.5.20
Browser: All tested
Maybe this error related? When i try to apply changes or save i find this error on firefox error console...
Error: document.adminForm.task is undefined
The Administrator menu is blocked and i cant perfom any operation.
The file permissions are writable in each situations.
Java Virtual Machine is installed.
Each browser was tested.