osgmultiplerendertargets: 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/bin/osgmultiplerendertargets - from package: openscenegraph

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