memprof2calltree: 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 CentOS possible default full paths are:

/usr/bin/memprof2calltree - from package: kdesdk

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

On Debian possible default full paths are:

/usr/bin/memprof2calltree - from package: kcachegrind-converters

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

Error in other languages:
memprof2calltree: bevel nie gevind nie
memprof2calltree: comandă negăsită
memprof2calltree: comando não encontrado
memprof2calltree: commande introuvable
memprof2calltree: command not found
memprof2calltree: käsku ei ole
memprof2calltree: không tìm thấy lệnh
memprof2calltree: komanda nerasta
memprof2calltree: Kommando nicht gefunden.
memprof2calltree: kommandot finns inte
memprof2calltree: komut yok
memprof2calltree: nie znaleziono polecenia
memprof2calltree: níor aimsíodh an t-ordú
memprof2calltree: no se encontró la orden
memprof2calltree: no s'ha trobat l'ordre
memprof2calltree: opdracht niet gevonden
memprof2calltree: parancs nem található
memprof2calltree: perintah tidak ditemukan
memprof2calltree: príkaz nenájdený
memprof2calltree: příkaz nenalezen
memprof2calltree: команда не найдена
memprof2calltree: командата не е открита
memprof2calltree: 命令找不到
memprof2calltree: コマンドが見つかりません