Roman Scherzer's ClrMamePro has been updated to v4.0180.
Further details can be found here: http://mamedev.emulab.it/clrmamepro/
(or read below)
fixed: official 7z bug which causes a crash when a fake 7z archive file is being processed
fixed: rebuilding bios files in hash collide full merge mode creates dupes (this also affects dat export)
fixed: wrong statistics "wrong named chd count