blahtexml: 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/blahtexml - from package: blahtexml

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

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