trigger-panel-run-dialog: 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/trigger-panel-run-dialog - from package: mate-gnome-main-menu-applet

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

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