xpbs_scriptload: 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 CentOS possible default full paths are:

/usr/lib64/xpbs/bin/xpbs_scriptload - from package: torque-gui

You may install the required package with command yum install {package}

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