wmlscope: 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/bin/wmlscope - from package: wesnoth-tools

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

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