bp_fast_load_gff: 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/bp_fast_load_gff - from package: bioperl

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

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