The data build in games is such a dreaded topic !!
It's even worse when people involved deeply leave and The Build ends up in other people's hands. Not an enviable situation.
Granted that our build was meant from the start as an experiment.. but.. the whole thing has never been very reliable. Many things have changed.. and still reliability isn't there.
I'm occasionally involved with the build phase as I develop a compression scheme or support something on the 3D side, but otherwise, I'd just like to get the latest data build as quickly as possible.
Not being able to get a working set of built data is got to be one of the biggest frustrations during development.
I can't point a finger on anyone specifically, because it's not just one person or a couple of people's fault.. but still.. I just want the built data !!