kwin_rules_dialog: 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"

On CentOS possible default full paths are:

/usr/bin/kwin_rules_dialog - from package: kdebase-workspace

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