I recently came up against this one - I had a fade cue that turned out to be unnecessary so I disabled it in the editor. What I didn't realise was that the next cue was automatically triggered by that disabled cue, so of course it didn't run. Took me a moment to figure out what happened there as it still appeared in the cue list as "auto".
So... When you disable or delete a cue, could a check be made for whether any other cues are triggered by that cue, and a warning popped up if any do exist? Might save a few red faces next time

Thanks!