FFEval: 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/FFEval - from package: topp

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

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