crashexport: 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/crashexport - from package: crashmail

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

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