kcminit_startup: 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/kcminit_startup - from package: kdebase-workspace

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

On Debian possible default full paths are:

/usr/bin/kcminit_startup - from package: kde-workspace-bin

You may install the required package with command apt-get install {package}

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