replacepdfobj: 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/replacepdfobj - from package: libcam-pdf-perl

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

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