pmx2pdf: 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/pmx2pdf - from package: pmx

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

Error in other languages:
pmx2pdf: bevel nie gevind nie
pmx2pdf: comandă negăsită
pmx2pdf: comando não encontrado
pmx2pdf: commande introuvable
pmx2pdf: command not found
pmx2pdf: käsku ei ole
pmx2pdf: không tìm thấy lệnh
pmx2pdf: komanda nerasta
pmx2pdf: Kommando nicht gefunden.
pmx2pdf: kommandot finns inte
pmx2pdf: komut yok
pmx2pdf: nie znaleziono polecenia
pmx2pdf: níor aimsíodh an t-ordú
pmx2pdf: no se encontró la orden
pmx2pdf: no s'ha trobat l'ordre
pmx2pdf: opdracht niet gevonden
pmx2pdf: parancs nem található
pmx2pdf: perintah tidak ditemukan
pmx2pdf: príkaz nenájdený
pmx2pdf: příkaz nenalezen
pmx2pdf: команда не найдена
pmx2pdf: командата не е открита
pmx2pdf: 命令找不到
pmx2pdf: コマンドが見つかりません