nautilus-image-manipulator: 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/nautilus-image-manipulator - from package: nautilus-image-manipulator

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

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