contactthemeeditor: command not found

Maybe Your $PATH variable doesn't contain the default paths? echo $PATH should give something like:

[root@server ~]# echo $PATH
/usr/local/sbin:/usr/local/bin:/sbin:/bin:/usr/sbin:/usr/bin:/root/bin

If it's empty, You may set the PATH variable with this command

export PATH="/usr/local/sbin:/usr/local/bin:/sbin:/bin:/usr/sbin:/usr/bin:/root/bin"

On Debian possible default full paths are:

/usr/bin/contactthemeeditor - from package: kaddressbook

You may install the required package with command apt-get install {package}

Error in other languages:
contactthemeeditor: bevel nie gevind nie
contactthemeeditor: comandă negăsită
contactthemeeditor: comando não encontrado
contactthemeeditor: commande introuvable
contactthemeeditor: command not found
contactthemeeditor: käsku ei ole
contactthemeeditor: không tìm thấy lệnh
contactthemeeditor: komanda nerasta
contactthemeeditor: Kommando nicht gefunden.
contactthemeeditor: kommandot finns inte
contactthemeeditor: komut yok
contactthemeeditor: nie znaleziono polecenia
contactthemeeditor: níor aimsíodh an t-ordú
contactthemeeditor: no se encontró la orden
contactthemeeditor: no s'ha trobat l'ordre
contactthemeeditor: opdracht niet gevonden
contactthemeeditor: parancs nem található
contactthemeeditor: perintah tidak ditemukan
contactthemeeditor: príkaz nenájdený
contactthemeeditor: příkaz nenalezen
contactthemeeditor: команда не найдена
contactthemeeditor: командата не е открита
contactthemeeditor: 命令找不到
contactthemeeditor: コマンドが見つかりません