sp_includer: 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

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/bin/sp_includer - from package: perl-SystemPerl

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