cking_suite: 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/lib/plainbox-providers-1/checkbox/bin/cking_suite - from package: plainbox-provider-checkbox

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

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