gbrowse_configure_slaves: 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/gbrowse_configure_slaves - from package: gbrowse

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

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