tsmodder: 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/tsmodder - from package: opencaster

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

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