mkpic: 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/mkpic - from package: texlive-pictures

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

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