groupwise_warp: 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/cmtk/bin/groupwise_warp - from package: cmtk

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