filter_templates: 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/lib/plainbox-providers-1/checkbox/bin/filter_templates - from package: plainbox-provider-checkbox

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

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