MzTabExporter: 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/MzTabExporter - from package: topp

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

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