Very strange problem. We can edit files such as index.html with the online control panel file manager provided by our webhost.

But when we try doing it with Fileman it says: "(Not Writeable)" and we have to save the HTML file with a different name.

The permissions for these files are set to rw- r-- r-- (644).

When I try to change the permissions with Fileman, the Status bar has the following message:
"Can not change mode"

If I change the permissions to 777 with my webhost's file manager, I can edit and save the file with the same name with Fileman.

I also can't delete files or do most of the other features in Fileman. Get an error message in the Status bar such as:
"Can not remove file(s)"

How can I fix these problems please?

Thank you VERY much.