the newest version of alaccarte (main menu editor) from the repository as of about 3-25-17 no longer runs. when run from ternminal is pits out some stuff about a gtk-builder error and some bad code at several lines (one of them is line 44) I would post the actual error but i have returned my pi-top to a working state via a restored backup. when I tried to reinstall from scratch and run apt-get update && apt-get upgrade alacarte threw the same error.
I have this one too. Whenever I click it, it crashes the whole UI, and I have to hard reset, in case I don't coincidentally have Task Manager or top open.