FileZilla Client fails to deal with UTF-8 characters in filenames

[MichaelInParis]

On one of my websites I have a few files with UTF-8 characters (French accented letters) and spaces in their names. Backing the website to my PC with FileZilla failed on those files (with the error "no such file or directory"), while:

• I enforced UTF8 through the SiteManager -> Charset options

• The filenames are correctly displayed in the right panel of FileZilla

• Fz doesn't even let me rename such a file (says it doesn't exist)

I created a new (empty) file in the remote site with UTF8 chars and spaces, and could do all these operations without a hitch.
What I noticed was that renaming that file (changing the UTF chars and/or the spaces and/or any other chars) showed in the log as

Status: Renaming '/mmdl/Noel2008/medium/Test file nome with spaces.txt' to '/mmdl/Noel2008/medium/Test file néme with spaces.txt'
Status: /mmdl/Noel2008/medium/Test file nome with spaces.txt -> /mmdl/Noel2008/medium/Test file néme with spaces.txt

while for the existing files for which it doesn't work, this is how a very similar attempt showed:

Status: Renaming '/mmdl/Noel2008/medium/Noël 2008 - tous-001.jpg' to '/mmdl/Noel2008/medium/Nxxl 2008 - tous-001.jpg'
Command: mv "Noël 2008 - tous-001.jpg" "Nxxl 2008 - tous-001.jpg"
Error: mv /mmdl/Noel2008/medium/Noël 2008 - tous-001.jpg /mmdl/Noel2008/medium/Nxxl 2008 - tous-001.jpg: no such file or directory

I ended up installing WinSCP with which I could do all I needed without a problem, but would prefer continue using FZ if I can make this work...

[botg]

Do you at any point in the message log see a message that says "Invalid character sequence received, disabling UTF-8"?