gsettings-data-convert: 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/gsettings-data-convert - from package: GConf2

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

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