With my Word 2013, I never get an error message (or thrown into the VBA Editor without an error message) when running the macro to insert an AutoText entry consisting of a one cell table, so there is no reason for me to put in a break point or delay.

I have a couple of other thoughts though.

Maybe the cached copy of your macro template has become corrupted and needs to be re-cached.

In Word 2013, the preferred code is to use .BuildingBlockEntries property instead of the .AutoTextEntries property ... so if your macro uses .AutoTextEntries you might want to see if .BuildingBlockEntries works better ... I doubt it will though, since .AutoTextEntries works equally well on my Word 2013.