mx-create-image-cache: 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/mx-create-image-cache - from package: libmx-bin

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

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