Are you saying the cp command gives you that error?
I type this in the Run Command box:
#sudo cp /root/via-archives/boot.tgz /usr/pluto/diskless/install/via/boot.tgz
And I get a page that says this:
KDE Man Viewer Error
No man page matching to sudo cp /root/via-archives/boot.tgz /usr/pluto/diskless/install/via/boot.tgz found.
Check that you have not mistyped the name of the page that you want. Be careful that you must take care about upper case and lower case characters!
If everything looks correct, then perhaps you need to set a better search path for man pages, be it by the environment variable MANPATH or a matching file in the directory /etc .