PTmender: 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/PTmender - from package: libpano13-bin

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

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