QCEmbedder: 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 Debian possible default full paths are:

/usr/bin/QCEmbedder - from package: topp

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

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