threads.mpb: 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"

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