Just tested out the new nightly build released a few mins ago.
Almost all cores are still crashing when trying to boot any ROM.
Only ones which didn't crash were Mednafen VB and MAME 2003.
The rest of the cores I use they all crash and reboot the console.
Nestopia and Genesis Plus GX still fail after the SET_ command, while SNEX9X 2002 and fMSX last line on the lower screen is about the font (also appears in Mame and M-VB before booting the ROMs, so I think that line is normal).
Using latest nightly 10-02 with the XBM menu.
I will report when we have fixed these issues, no sense repeating the same thing over again.
We are aware of the issues with Fceumm, nestopia, and picodrive, aliaspider said he has to fix something on the video driver in order to fix it. So I'm waiting for that instead of reverting the commits that caused the crashes to happen since those commits were made for enhancement reasons in general.