Macros breaking every dungeon

Hey all

Tried this (GSE) out for the first time last night with Oakenhearts setup, and I was pretty impressed! I ran into some problems tho.

Exiting/relogging WoW was breaking the macros nearly every time, so I had to setup again every time I logged in, and second seemingly at random in a key a macro would break. Any ideas? (And by break I mean pressing the macro button either did nothing or like 1 attack then it would stop)

are you DCing or actually manually exiting the game?