Build 2381 seems to work fine but build 2387 results in "Doomsday has stopped working" error from windows.
This happens before a game can be chosen to play, sometimes I get only a black screen.
I have not made any changes to windows or Doomsday that I am aware of.
If I return to build 2381 all games and the add-on packages in Doomsday seems to work fine.
Win 7 64 bit
16GB DDR3 memory
Doomsday out is below: