tv_grab_na_icons: 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/tv_grab_na_icons - from package: xmltv-util

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

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