ccmtcnvt: 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 Debian possible default full paths are:

/usr/bin/ccmtcnvt - from package: liwc

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