sauce-setuserpolicy: 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
/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/sauce-setuserpolicy - from package: sauce

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