SpectraFilterWindowMower: 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

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/SpectraFilterWindowMower - from package: topp

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