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This did it for me too. I'm living with the single broken package and have not yet stumbled on a bug.

There is a much simpler solution and explanation.

knoppix has only samba client by default meaing you can access shares but since you're not a server, no one can access yours. To do this you'd...

It's simple really. The setting in pcmanfm->preferences->desktop is reversed. UNcheck the "Show menus provided by the WM when the desktop is clicked"
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