cncsfrommodel: 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 CentOS possible default full paths are:

/usr/bin/cncsfrommodel - from package: clipper

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