blueman-sendto: 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

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/blueman-sendto - from package: blueman

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