xsp2: 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/xsp2 - from package: mono-xsp2

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

Error in other languages:
xsp2: bevel nie gevind nie
xsp2: comandă negăsită
xsp2: comando não encontrado
xsp2: commande introuvable
xsp2: command not found
xsp2: käsku ei ole
xsp2: không tìm thấy lệnh
xsp2: komanda nerasta
xsp2: Kommando nicht gefunden.
xsp2: kommandot finns inte
xsp2: komut yok
xsp2: nie znaleziono polecenia
xsp2: níor aimsíodh an t-ordú
xsp2: no se encontró la orden
xsp2: no s'ha trobat l'ordre
xsp2: opdracht niet gevonden
xsp2: parancs nem található
xsp2: perintah tidak ditemukan
xsp2: príkaz nenájdený
xsp2: příkaz nenalezen
xsp2: команда не найдена
xsp2: командата не е открита
xsp2: 命令找不到
xsp2: コマンドが見つかりません