Interesting temp fix; that's so strange.

Some others and I are also experiencing this in a couple different threads for the Act1/Creche bug specifically:
https://forums.larian.com/ubbthreads.php?ubb=showflat&Number=902942#Post902942
https://forums.larian.com/ubbthreads.php?ubb=showflat&Number=903895#Post903895

So far everyone I've seen experiencing this is playing Dark Urge.
I'm tempted to re-submit my bug report with that information in case it helps them diagnose it, but I'm not sure if it's relevant and I'm hesitant to look up if there's something specific that might be causing it like a cutscene or quest since this is my first DU run.

I was able to progress to Act 2 normally, but any attempts to teleport or zone to an Act 1 map after Voss has done his cutscene will crash the game.
Which isn't acceptable for me since I was saving grymforge until after the creche.

I ended up reloading my save all the way back to the tiefling camp to make some choice changes to this play while I wait for a patch... really hoping this is fixed by the time I finish mountain pass again.