mobilebroadband_resource: command not found

Have You tried accessing the binary with the full path?

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/2013.com.canonical.certification:plainbox-resources/bin/mobilebroadband_resource - from package: plainbox-provider-resource-generic

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