A fix for yesterdays Mame available as a patch if you downloaded the source, alternatively you could just download the source again if you prefer, so let's see what's fixed:

• Fixed major regression in 0.124 which caused many sound routes to be applied incorrectly. [Aaron Giles]
• Reverted gnga back to its previous state. [David Haywood]
  
  New clones added
• Ghosts'n Goblins (bootleg with Cross) [David Haywood]

Download from Mamedev.