The ROM-Manager tool fro MAME has been updated today.
Here's the new:

Added:
  • Warnings window to dir2dat
  • Scanner stats list "missing bytes"
  • Scanner popupmenu->drag'n drop->rebuilder show statistics
  • Some not very well hidden little easter egg 8)

Fixed:
  • Dir2dat doesn't add files when unzipping failed
  • Warningswindow lists set-subfolderfiles with wrong slash

Misc:
  • Improved dir2dat speed
  • Profiler tree for moving/adding will autoselect current folder
  • Revised tree items selection with left/right click combinations
  • Readded some improvements which were removed from 3.71d to 3.72
  • Minor gui changes

Removed:
  • Some very old unneeded core stuff


Get it from the official site.