If you were affected by the changes from yesterday (June 15th; see last post), you will also need a second patch to avoid an assert in XAUDIO2 at startup.

Link and description:

"Add WINAPI to other needed functions for stdcall calling convention on 32-bit"

http://git.redump.net/mame/commit/?id=9f214108eb78991227595a5b3e9080b90a16ac09
Code
/src/osd/modules/sound/xaudio2_sound.cpp
/src/osd/modules/font/font_dwrite.cpp
/src/osd/modules/input/input_xinput.h
/src/osd/modules/render/d3d/d3dhlsl.h
/src/osd/modules/render/drawd3d.cpp