I haven't used FileZilla Portable in a while, but just now I wanted to setup the program to use a SOCKS proxy. When I selected Settings from the File menu, I get the following error: XRC resource 'ID_SETTINGS_CONNECTION_FTP' (class 'wxPanel') not found!
I'm pretty sure that in the past, I have used the Settings menu before. I don't know when things changed, but I have upgraded my FileZilla Portable a few times in the last several months. I currently have the latest version.
I don't know if this has anything to do with it, but I have a modified "fzdefaults.xml" in the same directory as the portable launcher app. I have the "Config Location" specified as "..\..\Documents\Filezilla_Settings". This seems to still be ok, as my old settings are being used.