run-with-aspell: 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/run-with-aspell - from package: aspell

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

On Debian possible default full paths are:

/usr/bin/run-with-aspell - from package: aspell

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