ptloader: 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/cyrus/bin/ptloader - from package: cyrus-common

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

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