enblend-mp: command not found

Have You tried accessing the binary with the full path?

Maybe Your $PATH variable doesn't contain the default paths? echo $PATH should give something like:

[root@server ~]# echo $PATH

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/enblend-mp - from package: enblend

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