CartConvert: 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 CentOS possible default full paths are:

/usr/bin/CartConvert - from package: GeographicLib

You may install the required package with command yum install {package}

On Debian possible default full paths are:

/usr/bin/CartConvert - from package: geographiclib-tools

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

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