qtcreator_process_stub: 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/qtcreator_process_stub - from package: qt-creator

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

On Debian possible default full paths are:

/usr/bin/qtcreator_process_stub - from package: qtcreator

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

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