bp_aacomp: 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_aacomp - from package: bioperl

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

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