That's what it say if I try to copy, move, rename, delete or doing any other thing with some images that shows a strange character in the name, something like a question mark inside a rhombus.
I think is a no recognized character and I tried to set the correct locale in PCC and in the KDE4 Configure your system, I even set the codification (no UTF-8) and didn't work, on the contrary, gave some problems to my desktop.
I don't know what to do now, any ideas?
EDIT: To solve it just installed PCManfm and pcmanfm-¡10n (internationalization files), opened the folders/files and renamed them. I think is the easiest way.